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Class Number: 434 Class Title: EDUCATION AND DEMONSTRATION Subclass Subclass Number Title 1 DETECTION OR RANGE DETERMINATION OF DISTANT OBJECT BY APPARATUS USING SENSOR OF ELECTROMAGNETIC OR SOUND ENERGY 2 .Radar 3 ..Cathode ray screen display simulated by light means (e.g., light spot projected onto screen, etc.) 4 ..Optical means (e.g., image projector, etc.) or light or sound sensor (e.g., television camera, microphone, etc.) included in a simulator 5 ..Interference simulation 6 .Sonar 7 ..Interference simulation 8 ..Simulation of Doppler shift of echo 9 ..Simulation of plural detector system 10 ..Simulation by use of sound recording 11 ORGANIZED ARMED OR UNARMED CONFLICT OR SHOOTING 12 .Self-propelled projectile 13 ..Launched underwater 14 .Aerial warfare 15 ..Bombing 16 .Gunnery 17 ..Gunfire spotting 18 ..Gun recoil simulation 19 ..Gun aiming 20 ...Cinematographic or cathode ray screen display 21 ...Training apparatus using beam of infrared, visible light, or ultraviolet radiation 22 ....Beam sensor included in apparatus 23 ...Means (e.g., target, terrain model, etc.) marked or pierced to simulate projectile impact point 24 ..Gun loading or projectile preparation (e.g., fuse setting, etc.) 25 .Water warfare 26 ..Periscope view simulation 27 .Range finding 28 AIRCRAFT WIND DRIFT SIMULATION 29 VEHICLE OPERATOR INSTRUCTION OR TESTING 30 .Flight vehicle 31 ..Automatic pilot 32 ..Model viewed and maneuvered by trainee from point remote therefrom 33 ..Helicopter 34 ..Outer space vehicle 35 ..In flight 36 ...With simulation of night or reduced visibility flight 37 ..Aircraft, aircraft simulator, or means connected thereto traveling on ground or water during simulated flight training 38 ..Simulation of view from aircraft 39 ...View simulating means located on belt or cylinder 40 ...View simulating means located on element having spherical surface 41 ...Simulation of night or reduced visibility flight 42 ....Runway outlining or approach lights simulatedd 43 ...View simulated by cathode ray screen display 44 ...View simulated by projected image 45 ..Simulation of feel of control means (e.g., flight control stick, etc.) 46 ..Ground trainer agitated to simulate rough air buffeting or engine induced vibration of aircraft 47 ..Display or recordation of simulated flight path of ground trainer 48 ..Aircraft sound simulation 49 ..Aircraft or ambient condition simulated electrically or indicated by instrument or alarm 50 ...Takeoff or preparation therefor 51 ...Aircraft attitude (e.g., roll, etc.) 52 ...Ice formation or aircraft weight 53 ...Pressure 54 ...Propulsion means or accessory 55 ..Tiltable or turnable ground trainer 56 ...With fan or simulated propeller 57 ...With means for stabilizing trainer when idle 58 ...By fluid actuated piston/cylinder ram 59 ..Simulation of flight generated force applied to aircraft occupant 60 .Sail-equipped vehicle 61 .Bicycle or motorcycle 62 .Automobile or truck 63 ..Model viewed and maneuvered by trainee from point remote therefrom 64 ..Driver's skill measured by time or vehicle travel distance 65 ..Recordation of driver's performance 66 ..Real vehicle used in instruction or testing 67 ...Vehicle positioned on rollers, belt, or platform 68 ...Obstacle or other means contacted by improperly driven vehicle 69 ..Simulation of view from vehicle 70 ...View simulating means located on belt or cylinder 71 ..Manipulation of gear shift lever or clutch pedal 72 ARCHITECTURE, INTERIOR DECORATION, OR INDUSTRIAL PLANT LAYOUT 73 .Magnet included in display or demonstration 74 .Brick, tile, roofing, or siding 75 .Curtain or wall, ceiling, or floor cover 76 ..Light, mirror, or image projector included in display or demonstration 77 ..Roller-mounted belt or strip included in display or demonstration 78 ..Plaque (e.g., disk, etc.) turnable relative to index (e.g., window in card, etc.) to selectively align different points on plaque therewith 79 ..Building or room interior represented pictorially or by model 80 .Representation of furniture, bathroom or kitchen accessory, or cabinet placeable in different locations on representation of room interior 81 VISUAL ART OR CRAFT, ARTISTIC ADORNMENT, OR COLOR TRAINING OR DEMONSTRATION 82 .Sculpture or craft involving manual carving or shaping 83 .Shape defined by filament (e.g., string, etc.) 84 .Color application (e.g., painting, etc.) 85 .Drawing 86 ..Animal or human body model having movable partss 87 ..Stencil 88 ..Tracing 89 ..Model support 90 ..Grid included in drawing aid or scene viewer 91 ..Perspective 92 ..Orthogonal projection 93 .Flower arranging or landscaping 94 .Hair or wig styling 95 .Decorative sewing, needlework, weaving, or textile designing 96 .Design formed of identical or complementary elements 97 ..Strips 98 .Color display 99 ..Personal appearance or wearing apparel 100 ...Cosmetic or nail polish 101 ..Produced by spinning means (e.g., plural rotating color disks, etc.) 102 ..Produced by superposed color filters 103 ..Including mixing receptacle or holder for color material 104 ..Including relatively rotatable elements (e.g., concentrically mounted color disks, etc.) 105 ..Automobile 106 ASTROLOGY 107 BUSINESS OR ECONOMICS 108 .Work schedule 109 .Record keeping 110 .Coin or currency identification or counterfeit detection 111 CELESTIAL NAVIGATION 112 COMMUNICATION AIDS FOR THE HANDICAPPED 113 .Tactile reading aid (e.g., Braille, etc.) 114 ..Converting information to tactile output 115 ..Braille writing slate 116 .Converting information to sound 117 .Writing guide for the blind 118 COMPUTER LOGIC, OPERATION, OR PROGRAMMING INSTRUCTION 126 FLUID FLOW OR WAVE MOTION 127 FOOD 128 GAME, BOARD OR TABLE TYPE 129 .Using playing card 130 GEOGRAPHY 131 .Terrestrial globe or accessory therefor 132 ..Relief globe 133 ..Having diverse use (e.g., pencil box, etc.) 134 ..Having magnet associated therewith 135 ..Having plural planar or curved surfaces (e.g., flat or frustoconical surfaces, etc.) 136 ..Rotated by mechanical drive 137 ..Collapsible or arranged for convenient assembly, disassembly, or storage 138 ...Inflatable 139 ..With means representing vehicle moving relative to earth 140 ...Space vehicle 141 ..With means indicating distance between points on earth 142 ..With means indicating time at different points on earth 143 ..With means demonstrating solar illumination of earth 144 ..With means demonstrating wind currents over earth 145 ..With internal light 146 ..With means to facilitate finding or reading indicia thereon 147 ..With map segment attachable thereto (e.g., continent, nation,, etc.) 148 ..With suspension type support 149 .Means indicating time at different points on earth 150 .Map or terrain model 151 ..With model or sample of natural or man-made item associated therewith 152 ..Relief 153 ..Means for facilitating location of different points on map 154 HISTORY OR GENEALOGY 155 IDENTIFICATION OF PERSON OR HANDWRITING ANALYSIS 156 LANGUAGE 157 .Foreign 158 .Shorthand 159 .Alphabet letter formation, recognition, or sequencing 160 ..Letter formed by segments 161 ..Letter displayed upon manipulation of mechanism 162 .Writing or printing by hand 163 ..Tracing 164 ...Slotted or grooved path 165 ..Writing sample included in teaching means 166 ..Mechanical means for teaching proper position of body part while writing 167 .Spelling, phonics, word recognition, or sentence formation 168 ..Magnet included in teaching means 169 ..Electrical component included in teaching means 170 ..Color used in teaching means 171 ..Letter or word bearing elements (e.g., cards, blocks, etc.) with interfitting surface configurations 172 ..Letter-bearing elements (e.g., cards, blocks, etc.) selectively aligned to form word or sentence 173 ...Letter-bearing belt or reel-mounted strip 174 ...Rotatably mounted letter bearing element 175 ...Letter-bearing elements slidable between different grooves 176 ..Display of word or picture upon correct manipulation of teaching means 177 ..Crossword puzzle aid 178 ..Reading 179 ...Speed 180 ....Projected image of reading matter 181 ....Apertured mask moved past reading matter carrier 182 ....Reading matter carrier moved past viewing position 183 ....Pacer moved down reading matter carrier 184 ...Directionality training (e.g., for dyslexics, etc.) 185 .Speech 186 MAGNETIC OR GYRO COMPASS 187 MEASUREMENT OF LENGTH OR VOLUME 188 MATHEMATICS 189 .Base conversion or use of base other than ten 190 .Magnet included in teaching means 191 .Arithmetic 192 ..Chalkboard or equivalent means having readily erasable surface 193 ..Manually manipulated numeral shaped elements 194 ..Numeric value represented by weight placed on balance 195 ..Manually manipulated elements having size proportional to numeric value 196 ...Fraction representing elements 197 ..Indicia-bearing belt or reel-mounted stripp 198 ..Plaque (e.g., disk, etc.) turnable relative to index (e.g., window in card, etc.) to selectively align different points on plaque therewith 199 ..Plaque slidable relative to index (e.g., window in card, etc.) to selectively align different points on plaque therewith 200 ..Manually manipulated pin or peg 201 ..Electric component included in teaching means 202 ..Keyboard or like manually manipulated array (e.g., slides, levers, etc.) 203 ..Apertured elements threaded on elongate means (e.g., abacus, etc.) 204 ...Elements manually placed on or removed from elongate means during use 205 ..Means having number of marks (e.g., dots, etc.) or associated physical units (e.g., sticks, indentations, etc.) corresponding to numeric value 206 ..Rotatable wheel-shaped element (e.g., ring, disc, cylinder, etc.) having indicia on perimeter thereof 207 ..Color used in teaching means 208 ..Ball, block, or disk 209 ..Division or multiplication 210 ..Place value relative to decimal point 211 .Geometry, trigonometry, or physical mathematic model structure 212 ..Pythagorean theorem 213 ..Property of sphere or spheroid 214 ..Property of circle or ellipse 215 ..Demonstration means using relatively turnable elements 216 ..Demonstration means using filament (e.g., string, etc.) to define geometric shape 217 METEOROLOGY 218 NUCLEAR ENERGY OR RADIOACTIVE RADIATION DETECTION OR SIMULATION 219 OCCUPATION 220 .Air traffic control 221 .Audiometry 222 .Code communication 223 ..Visual signalling 224 .Electricity or electronics 225 .Dairying, farming, ranching, or other occupation involving care of plants or animals 226 .Fire fighting 227 .Keyboard operation (e.g., typing, key punching, etc.) 228 ..Means for selectively illuminating character on simulated keyboard 229 ..Means for selectively rendering key operable or inoperable 230 ..Means for selectively producing sound of character 231 ..Practice keyboard having individually depressible keys 232 ...With means to display character upon depression of key 233 ..Means on hand or finger for indicating finger to be used 234 .Soldering or welding 235 PARLIAMENTARY PROCEDURE 236 PSYCHOLOGY 237 .Cooperation of plural pupils 238 .Behavior or performance display (e.g., board for showing completed chores, etc.) 239 RADIO NAVIGATION 240 .Light sensor included in simulator of radio navigation equipment 241 .Simulation of upwardly directed airfield or landing approachh marker radio beam 242 .Simulated radio signal generated by use of data storage means 243 .Simulated bearing or position or vehicle relative to radio transmitter or directional beam indicated to trainee by instrument 244 .Simulation of radio directional beam carrying Morse code signal 245 RELIGION 246 .Rosary 247 PHYSICAL EDUCATION 248 .Basketball 249 .Bowling 250 .Dancing 251 .Football, soccer, or rugby 252 .Golf 253 .Skiing 254 .Swimming 255 .Traversing ground (e.g., crawling, running, etc.) 256 .Body model with articulated parts 257 .Picture or image of body included in display or demonstration 258 .Developing or testing coordination 259 ..Associating dissimilar objects with apertures or pegs having matching size, shape, or color 260 ..Manipulation of tool or fastener (e.g., zipper, shoelaces, etc.) 261 ..Tracing 262 ANATOMY, PHYSIOLOGY, THERAPEUTIC TREATMENT, OR SURGERY RELATING TO HUMAN BEING 263 .Dentistry 264 ..Means mounting upper and lower tooth models for relative movement 265 .Cardiac massage or artificial respiration 266 .Simulation of body sound 267 .Anatomical representation 268 ..Simulation of flow of body liquid 269 ..Including superposed sheets respectively depicting different body parts 270 ..Head or part thereof 271 ...Eye 272 ..Internal organ, blood vessel, or nerve 273 ...Female genital 274 ..Skeleton or bone 275 ...Palpation or manual force application (e.g., chiropractic adjustment, etc.) 276 SCIENCE 277 .Crystal structure model or display having discrete element (e.g., geometric shape, light, etc.) representing atom 278 .Molecular model or display having discrete element representing atom or radical 279 ..Model having helical chain of elements (e.g., DNA model, etc.) 280 ..Atom or radical represented by element formed of sheet material 281 .Model or display demonstrating structure or property of atom or radical 282 ..Indicia chart (e.g., periodic table, etc.) 283 .Means demonstrating physical property (e.g., osmotic pressure, solubility, etc.) of substancee 284 .Astronomy 285 ..Representation of light generating celestial body 286 ...Light spot 287 ...Celestial globe 288 ....And earth representation 289 ...Finding or identifying aid 290 ...Simulation of sun and earth 291 ....Simulation of motion of earth and another major planet around sun 292 ....And moon 293 .....Moon model moved around earth model by mechanical or electrical means 294 ......By belt drive 295 .Biology or taxidermy 296 ..Specimen display 297 ...Specimen enclosure 298 .Chemistry or metallurgy 299 .Geology 300 .Physics 301 ..Electricity or magnetism 302 ..Statics or dynamics 303 ..Optics 304 TELLING TIME OR CALENDAR READING 305 VEHICLE MOVEMENT OR TRAFFIC ACCIDENT OR CONDITION 306 VOTING MACHINE OR BALLOT MARKING 307 CATHODE RAY SCREEN DISPLAY AND AUDIO MEANS 308 AUDIO RECORDING AND VISUAL MEANS 309 .Common carrier for visual means and audio recording 310 ..Carrier used with image projector 311 ..Card, sheet, or block 312 ...Reading head moved past stationary audio track 313 ....Manually 314 .Image projector 315 ..With code on image carrier for controlling operation of apparatus 316 ..With code on audio carrier for controlling operation of apparatus 317 .Visual information in book form 318 .Audio recording on disk 319 AUDIO RECORDING 320 .Listener's voiced response recorded 321 .Operation of apparatus controlled by listener's response to question or problem 322 QUESTION OR PROBLEM ELICITING RESPONSE 323 .Cathode ray screen display included in examining means 324 .Image projector included in examining means 325 ..And light detector 326 .Mark transfer sheet (e.g., carbon paper, etc.) included in examining means 327 .Correctness of response indicated to examine by self-operating or examinee actuated means 328 ..Involving heat or chemical reaction 329 ..Involving fluid flow 330 ..Involving magnetic attraction 331 ..By optical element (e.g., mirror, color filter, lens, etc.) 332 ..Reward dispensed for correct answer 333 ..Picture or pattern completed by examinee placing plaques bearing portions thereof in correct relationn 334 ..Hand-held element insertable to different depths in apertures respectively representing right and wrong answers 335 ..By means including electrical component 336 ...Response of plural examinees communicated to monitor or recorder by electrical signals 337 ...Light detector 338 ...Part of electric circuit completed when examinee places end of flexible lead, or means connected thereto (e.g., plug, etc.), in contact with another element 339 ...Part of electric circuit completed when examinee depresses portion of sheet having electric conductor associated therewith 340 ...Part of electric circuit completed when examinee places free element in contact with another element 341 ....Correct answer indicator lamp carried by free element 342 ...Question or problem located on endless belt or reel mounted strip 343 ...Size or shape of, or aperture in, free element controls indication of response correctness 344 ...Correct answer illuminated 345 ..Size or shape of, or aperture in, free element cntrols indication of response correctness 346 ..Correctness of response indicated when examinee physically alters element other than by marking it 347 ..Correct answer displayed on side of element opposite side displaying question or problem 348 ..Correct answer hidden until examinee moves element 349 ...Means for receiving examinee's written response 350 .Response of plural examinees communicated to monitor or recorder by electrical signals 351 ..Wireless signals 352 ..With means for indicating first examinee to respond 353 .Grading of response form 354 ..Comparison of response form with standard answer form 355 ...Light detector sensing response 356 ...Electrical means sensing conductive mark representing response 357 ...Means sensing aperture representing response 358 ..Light detector sensing response 359 ..Electrical means sensing conductive mark representing response 360 ..Means sensing aperture representing response 361 ..Means perforating response form at correct answer location 362 .Electrical means for recording examinee's response 363 .Card or sheet for receiving examinee's written, marked, or punched response 364 ..With apertured overlay 365 MEANS FOR DEMONSTRATING APPARATUS, PRODUCT, OR SURFACE CONFIGURATION, OR FOR DISPLAYING EDUCATION MATERIAL OR STUDENT'S WORK 366 .Means for simulating abnormal condition 367 .Means for comparing characteristics of plural articles or materials 368 .Superposed indicia bearing sheets, one depicting interior view 369 .Means for displaying article at various stages of manufacture or treatment 370 .Transparent means permitting interior view 371 .Mirror for displaying something (e.g., apparel, hair style,, etc.) as it would appear when associated with viewer 372 .Aircraft, spacecraft, or component thereof 373 .Land or water vehicle (e.g., automobile, boat, etc.) or component thereof 374 ..Servicing aid (e.g., lubrication chart, etc.) 375 ..Shock absorber or spring 376 ..Tire, wheel, or brake 377 .Beauty aid or perfume 378 .Burial means or grave maker 379 .Demonstration or display of electrical apparatus or component 380 ..Motor or generator 381 .Fluid filter 382 .Household equipment 383 ..Refrigerator or air conditioner 384 ..Vacuum cleaner 385 .Insulation 386 .Jewelry or monogram 387 .Lock or safe 388 .Lubricant or lubrication 389 .Mechanical power source (e.g., engine, windmill, etc.) 390 .Mining 391 .Pen or pencil 392 .Sport equipment 393 .Toy 394 .Timepiece or component thereof 395 .Wearing apparel 396 ..Displayed on doll or manikin 397 ..Footwear 398 ...Hose 399 ..Headwear 400 ..Neckwear 401 .Machine mechanism 402 .Rotatable element having indicia or picture on perimeter thereof 403 .Block or like manually manipulatable object having indicia or picture on face thereof, or three-dimensional form for demonstrating shape 404 .Plaque (e.g., disk, etc.) turnable relative to index (e.g., window in card, etc.) to selectively align different points on plaque therewith 405 .Plaque slidable relative to index (e.g., window in card, etc.) to selectively align different points on plaque therewith 406 .Jigsaw elements having indicia thereon 407 .Manually manipulated pin or peg inserted into display board 408 .Chalkboard or equivalent means having easily erasable surface 409 ..Mark formed by magnetic attraction between materials (e.g., particles in sheet made visible by movement of magnet over sheet, etc.) 410 ..Mark formed by bonding sheet to underlying surface with pressure-applying stylus (e.g., Magic Slate, etc.) 411 ..Erasable surface on endless belt 412 ..Erasable surface on reel-mounted sheet 413 ..Separate elements having erasable surfaces 414 ...Relatively swingable 415 ..With pencil holder or sharpener 416 ..With chart, illustration, or indicia 417 ..Chalkboard cleaning means, chalk or eraser holder, or chalk dust receiverr 418 ..With ruler, straight edge, or holder therefor 419 ..Pivotal about horizontal axis 420 ..Vertically adjustable 421 ..Attached to wall 422 ..Hand-carried school slate 423 ...With rigid corner cap or separate means holding slate frame elements together 424 ...With cushion or noise muffler attached to slate frame 425 ..Artificial slate formed of plural constituents 426 .Endless belt or reel-mounted strip having indicia thereon 427 .Apertured mask placed over information bearing surface 428 .Pictorial demonstration or display 429 .Demonstration or display means combined with storage or collection means (e.g., receptacle, scoop, etc.) 430 .Display panel, chart, or graph 431 ..Showing seat or desk location 432 DESK, TABLE, OR STUDY BOOTH 433 MISCELLANEOUS