PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.


Enter a class/subclass code here to get a list of patent titles. Use any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any subclass letters capitalized. Currently Design Patent titles (those in the classes of the form Dxx.yy) are not retreivable.

Enter class/subclass code:


Class Number: 369
 Class Title: DYNAMIC INFORMATION STORAGE OR RETRIEVAL

Subclass  Subclass
Number    Title

  1       COMBINED INDEPENDENT AUDIO SYSTEMS
  2       .Changeover between audio systems
  3       ..Fading between plural signals
  4       .Combining signals to form composite (e.g., mixing)
  5       .One of systems having plural concurrent signals (e.g.,
            stereophonic)
  6       .Radio
  7       ..Including recording from radio
  8       ..Oscillator modulated by retrieved information signal
  9       ..Mechanical phonograph
  10      ..With common cabinet for cartridge or cassette
  11      ..Including separable assembly
  12      ..Cabinet details
  13      STORAGE DIFFERENT FROM RETRIEVAL (E.G., OPTICAL RECORDING AND
           MAGNETIC REPRODUCTION)
  14      SIMULTANEOUS DIVERSE TYPES OF STORAGE OR RETRIEVAL
  15      ALTERNATIVE DIVERSE TYPES OF STORAGE OR RETRIEVAL
  16      MECHANICAL PRODUCTION OF OPTICAL STORAGE TRACK
  17      TRACK CONVERSION
  18      OPTICAL READING OF MECHANICAL RECORD
  *       ******************************
  *       *CLASS 360 IS AN INTEGRAL....*
  *       *PART OF CLASS 369 AS SHOWN..*
  *       *BY THE POSITION OF THIS BOX.*
  *       ******************************
  19      CONTROL BY TIMER OR EXTERNAL EXTRANEOUS CONDITION
  20      .By diverse art device
  21      ..In vehicle or elevator
  22      ..Audible indicator
  23      ...Talking clock
  24      OPERATOR-ACTUATED REMOTE CONTROL OR INFORMATION LOCATION
  25      .Dictation or transcribing
  26      ..Privacy
  27      ..With access to or marking of specified location (e.g.,
             indexing)
  28      ...By stored additional signal (e.g., tone)
  29      ..Remote station (e.g., multiple stations or recording devices)
  30      .Selective addressing of storage medium (e.g., programmed
            access, "juke box")
  31      ..Novelty device (e.g., talking doll)
  32      ..With specified electrical information signal processing
  33      ..With specified electrical control signal processing
  34      ...Plural storage medium elements
  35      ..Plural nontranslating storage elements (e.g., in situ)
  36      ..With unitary plural disc carrier
  37      ...Radial array
  38      ...Moving linear array
  39      ...Scanning turntable
  40      ..By manually actuated mechanism for movement of tone arm
  41      ..Of track on single storage medium
  42      .By mechanical linkage
  43      WITH SERVO POSITIONING OF TRANSDUCER ASSEMBLY OVER TRACKK
           COMBINED WITH INFORMATION SIGNAL PROCESSING
  44.11   .Optical servo system
  44.12   ..Solid state optical element with plural dissimilar
             optical components (e.g., using I.C. block, etc.)
  44.13   ..Dithering or wobbling the beam or track
  44.14   ..Optical head servo system structure
  44.15   ...Elastic, flexible, pliant or spring support of lens or
              mirror
  44.16   ....Flat flexible support (e.g., parallel leaf spring,
               etc.)
  44.17   ...Optical head element with rotary motion
  44.18   ....Rotary head wheel or scanner (e.g., for use with
               arcuate, transverse or slant tracks, etc.)
  44.19   ....Head element pivots on arm (e.g., optical head disk arm
               etc..)
  44.21   ....Lens or mirror pivots off center (e.g., on a shaft,
               etc.)
  44.22   ...Lens or mirror floats, (e.g., magnetic field support or
              lens/mirror can freely float and pivot about its own axis,
              etc.)
  44.23   ...Structure for shaping beam or causing astigmatic
              condition
  44.24   ....Means to mask or shield a portion of the beam
  44.25   ..Servo signal compared to a reference signal
  44.26   ..Servo system operation related to disc structure
             information format
  44.27   ..Initialization/start-up or changing modes of system
  44.28   ...While track jumping or crossing
  44.29   ...Servo loop gain/switching control
  44.31   ....Recording
  44.32   ..Means to compensate for defect or abnormal condition
  44.33   ...Recording (e.g., inhibit recording upon defect, etc.)
  44.34   ..Sampling servo system
  44.35   ..Servo loop gain/switching control
  44.36   ...Variable gain
  44.37   ..Plural incident beams
  44.38   ...Recording
  44.39   ..Recording
  44.41   ..Arithmetic operation using plural photodetectors
  44.42   ...Beam or detector is not rectangular or circular
  47      CONTROL OF STORAGE OR RETRIEVAL BY A SIGNAL TO BE RECORDED OR
           REPRODUCED (E.G., PILOT OR CONTROL SIGNAL)
  48      .Control of information signal channel
  49      ..Of plural interrelated channels
  50      .Mechanism control by information signal (e.g., voice
            responsive)
  51      ..Control of spiral track spacing (e.g., signal variable pitch)
  52      CONTROL STRUCTURE ON STORAGE MEDIUM SENSED BY OTHER THAN
           TRANSDUCER SUPPORT (E.G., CONDUCTIVE STRIP, NOTCHED EDGE
           SENSOR)
  53      WITH CONDITION INDICATING (E.G., MONITORING) OR TESTING
  54      .With radiation storage or retrieval
  55      .Of transducer
  56      ..Location on storage medium
  57      ..Positioning adjunct (e.g., indexing)
  58      .Of record carrier
  59      WITH BINARY PULSE TRAIN INFORMATION SIGNAL
  60      SIGNAL PROCESSING BY STORAGE AND SUBSEQUENT RETRIEVAL (E.G.,,
           FREQUENCY SHIFT, DELAY)
  61      STORAGE OF DIRECTLY RETRIEVABLE MODULATED R.F. OR SUPERAUDIBLE
           CARRIER SIGNAL
  62      STORAGE OF SIGNAL MODULATING COMPONENT
  63      SOUND REPRODUCTION FOR TOY OR NOVELTY DEVICE (E.G., TALKING
           DOLL)
  64      .With electrical information signal processing
  65      .Indexing to track (e.g., consecutive)
  66      ..By chance
  67      .With beginning or end of cycle stylus return
  68      .Manual motion application (e.g., novelty card, hand-held
            stylus)
  69      SYSTEMS OR SUBSYSTEMS COMBINED WITH DIVERSE ART DEVICE
  70      .For control of diverse art device
  71      WITH STYLUS CLEANING OR TREATMENT (E.G., GRINDING)
  72      WITH STORAGE MEDIUM CLEANING OR ELECTROSTATIC CHANRGE
           NEUTRALIZATION
  73      .By charge leakage (e.g., ionized particles)
  74      .By tone arm attachment
  75.1    WITH PARTICULAR CABINET STRUCTURE
  75.2    .With mechanism to place disc on a turntable
  76      .With electrical information signal processing
  77.1    .Slotted for edgewise insertion of storage disc
  77.2    ..Having disc stored in protective jacket
  78      .With lid-mounted transducer assembly carrier
  79      .With closure-operated interlock or braking actuator
  80      .Particular acoustical structure (e.g., baffle)
  81      ..Having collapsible or expandable acoustic path
  82      ..Having parallel acoustic paths
  83      EDITING OF STORED INFORMATION
  84      DUPLICATION OR COPYING (E.G., RERECORDING)
  85      .To diverse type of storage medium
  86      STORAGE OR RETRIEVAL OF SPATIALLY RELATED ACOUSTIC SIGNALS
           (E.G., STEREO)
  87      .Simulated spatial effect (e.g., pseudo-stereo)
  88      .With transformation or intentional distortion of information
            signal (e.g., preemphasis)
  89      .Quadraphonic
  90      ..Including modulated subchannel signal
  91      .Having distinct electrical channels
  92      .Including distinct storage tracks on record medium
  93      SYSTEMS HAVING PLURAL PHYSICALLY DISTINCT INDEPENDENT TRACKS ON
           A SINGLE STORAGE MEDIUM SURFACE
  94      .Having layered storage medium
  95      .Common time base (i.e., simultaneous)
  96      .Continuous consecutive storage or retrieval of interrupted
            track for single signal (e.g., automatic reversal)
  97      ..Tracks transverse to a motion component
  98      .Indexing to discrete signal tracks (e.g., consecutive, by
            chance)
  99      SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM
  100     .Radiation beam modification of or by storage medium
  101     ..Invisible radiation (e.g., electron beam or X-ray)
  102     ..Multiplex
  103     ..Holographic
  104     ..Ribbon light modulator
  105     ..Penumbra or push-pull optical system
  106     ..Optical feedbackk
  107     ..Ground noise suppression, signal envelope, or plural optical
             modulation
  108     ..Color
  109     ..With diffraction (e.g., pits, grating)
  110     ..By polarization
  111     ..Spiral or helical track
  112     ..With particular imaging element
  113     ..With medium contacting drum or gate in optical system (e.g.,
             sound head)
  114     ...Movable roller support for optical path
  115     ...With driving or stabilizing mechanism
  116     ..Light intensity adjustment or maintenance
  117     ..Having movable shutter or light gate
  118     ..With detail, configuration, or adjunct of element having slit
             or aperture in radiation path
  119     ...With movement of optical beam (e.g., galvanometer)
  120     ..Having particular radiation sensor
  121     ..With particular light source (e.g., laser, CRT with phosphor)
  122     ...Solid state
  123     ...Glow lamps
  124     ..With details of electrical signal procesing
  125     ..Having photographic storage medium (e.g., variable density or
             area)
  126     .Electrical modification or sensing of storage medium (e.g.,
            capacitive, resistive, electrostatic charge)
  127     .Mechanical modification or sensing of storage medium
  128     ..With electrical information signal processing
  129     ...From information modulated oscillator
  130     ...Sensing of elastic deformation or relaxation of storage
              medium (e.g., skid type)
  131     ...Bidirectional information flow (e.g., record/replay
              switching)
  132     ...Recording
  133     ....With transformation or intentional distortion of information
               signal (e.g., compensation for velocity variation with
               diameter)
  134     ...With particular amplification characteristic or signal
              control circuitry (e.g., muting)
  135     ..Specified structure of electrical transducing assembly
  136     ...Multichannel (stereo cartridge)
  137     ....By stress application to solid transducing element (e.g.,
               piezoelectric)
  138     .....With adjustable or replaceable stylus coupling structure
  139     ....With details of damping or compliance
  140     ...Plural styli
  141     ...Plural alternative or with signal handling adjunct
  142     ...Stylus controlled optical element
  143     ...Electron tube
  144     ...Electret or piezoelectric
  145     ...Semiconductive
  146     ...Magnetic field variation (e.g., magnetostrictive)
  147     ....Moving signal coil
  148     ....Variable reluctance
  149     .....Fixed coil surrounding fixed part of magnetic path
  150     ...Capacitive or electrolytic liquid
  151     ...Electrostatic or capacitive
  152     ...Variable resistance
  153     ..Including treatment to facilitate storage (e.g., storagee
             medium softening)
  154     ...Heating (e.g., heated stylus)
  155     ..Mechanical conversion to or from sound
  156     ...Including fluid coupling in force linkage
  157     ...Sound box with mounting structure
  158     ...Acoustical tone arm
  159     ....Having plural acoustical paths
  160     ...Sound box
  161     ....With interchangeable styli
  162     ....Including stylus pivoted from fixed casing
  163     ....With sound modification
  164     ....Convertible between lateral and perpendicular modulation
               modes
  165     ....Perpendicular mechanical modulation
  166     .....Recording
  167     .....With mechanical amplification (e.g., frictional coupling)
  168     .....Floating weight
  169     ....Lateral mechanical modulation
  170     ..Stylus holder or shield
  171     ...With structure to interchange styli
  172     ....By replacement
  173     ..Stylus
  174     .Including signal modification
  175     ..Frequency dependent (e.g., separation)
  176     DYNAMIC MECHANISM SUBSYSTEM
  177     .Having stationary storage medium
  178     .Access of multiple storage elements (e.g., record changer)
  179     ..Cylindrical storage element
  180     ..Flexible disc
  181     ..Stack height adjustment for tone arm or turntable
  182     ..Numerical count shut-off
  183     ..Cam shaft transverse to turntable spindle axis of record
             changer
  184     ..Tone arm position control by sensing of disc (e.g., disc or
             hole size)
  185     ...Disc size sensor on or using tone arm
  186     ...Stepped tone arm stop element
  187     ...Disc size sensor in feed path
  188     ...Disc size sensor at turntable position
  189     ..Turntable speed control
  190     ...By sensing of disc (e.g., disc or hole size)
  191     ..Storage disc fed to and removed from turntable
  192     ...Plural disc holder having unitary separating structure
  193     ...Grouped removal with sequential feed
  194     ...Coplanar storage
  195     ...Both sides of disc used
  196     ..Separate motors operate turntable and disc change mechanism
  197     ..Plural turntables
  198     ...Plural tone arms
  199     ..Both sides of disc used
  200     ...By inverting disc
  201     ..Discs sequentially removed from turntable
  202     ..Discs sequentially fed to turntable
  203     ...Tone arm set down adjustment
  204     ...By edge controlled feeding of disc
  205     ....With feed cooperating structure on spindle
  206     ...By center hold feeding of disc (e.g., spindle drop)
  207     ....Support mechanism adapter for large hole records on smalll
               hole spindles
  208     ....Having specified spindle structure
  209     .....Umbrella type
  210     .....Having shoulder and ejector lever
  211     ......With edge stabilizer
  212     ..Auxiliary structure (e.g., shut-off preventer, disc spacer)
  213     .Additional motion of storage element support to effect
            tracking
  214     ..Cylindrical storage element
  215     .Having power driven transducer assembly
  216     ..Having tone arm set-down control
  217     ...By disc sensing (e.g., by sensed disc or hole size)
  218     ..Having groove engaging driving element
  219     ..With drive transverse to storage track during storage or
             retrieval
  220     ...Controlled by transducer assembly support
  221     ...With additional drive (e.g., scanning, restoring, or return)
  222     ...Having pivoted tone arm
  223     ...By lead screw
  224     ..With passive linear tracking
  225     ..Restoring after passive tracking
  226     ...Responsive to transducer support condition (e.g., movement or
              position)
  227     ....Numerical count replay
  228     ....Controllable position
  229     ...Turntable mounted template
  230     ..Power cueing (i.e., engage/disengage)
  231     .Mechanism responsive to control structure on storage medium
            sensed by transducer assembly support (e.g., trip device)
  232     ..With turntable braking (e.g., velocity or reverse responsive)
  233     .Mechanism condition or storage medium responsive control
  234     ..With turntable braking (e.g., tone arm position responsive)
  235     ...With stopping of motor
  236     ...Adjustable
  237     ...With electrical control of brake
  238     ...End limit sensor coupled with tone arm
  239     ..Speed
  240     ...Variable radius compensation (e.g., constant interaction
              speed)
  241     ...Self-responsive (e.g., governor)
  242     ..Antiskating
  243     ..Energizing circuit
  244     .Specific detail of transducer assembly support structure (e.g.,
            tone arm)
  245     ..With manual tone arm displacement adjunct (e.g., cueing)
  246     ...With viscous limiting of motion (e.g., rate damping)
  247     ..Vibration or resonance suppression (e.g., damping)
  248     ...By viscous damping
  249     ..Having linear guide
  250     ..Pivoted arm with tracking path compensation
  251     ..Having application of counterbalancing force
  252     ...Lateral (e.g., antiskating)
  253     ...By resilient force element (e.g., spring)
  254     ...Specified weight mounting
  255     ..Having specified bearing structure
  256     ..Mechanical details of cartridge mounting
  257     ..Rest
  258     .Specific detail of storage medium support or motion productionn
  259     ..For endless web looped about plural rotatable mounts (e.g.,
             belt)
  260     ..For cylinder
  261     ..For pliable (e.g., floppy) disc
  262     ..With storage medium removal adjunct
  263     ..Mounting structure for support or motion producing assembly
             (e.g., vibration damping
  264     ..Turntable
  265     ...With auxiliary turntable
  266     ...Driving mechanism
  267     ....Speed changing
  268     ...Braking
  269     ...Bearing structure
  270     ...Disc holding or locating (e.g., spindle structure)
  271     ....With detail of storage medium contact structure on turntable
               surface
  272     STORAGE MEDIUM STRUCTURE
  273     .Combined with diverse art structure
  274     .Composite (e.g., package with preview record)
  275.1   .Optical track structure (e.g., phase or diffracting
            structure, etc.)
  275.2   ..Erasable, reversible or re-recordable
  275.3   ..Track data format/layout
  275.4   ..Pit/bubble/groove structure specifies
  275.5   ..Protection (e.g., preventing damage to medium, etc.)
  276     .Electrical track structure
  277     .Special groove (e.g., particular groove shape)
  278     ..Groove acts as control system signal
  279     ..Guide during storage or retrieval
  280     .Specific disc profile
  281     ..With interdisc coupling
  282     .Specified center hole or locating structure
  283     .Layered (e.g., permanent protective layer)
  284     ..Radiation beam modified or controlling (e.g., photosensitve,
             optical track)
  285     ...With mask
  286     ..Laminated or unified discrete layers
  287     .Flexible
  288     .Specified material
  289     .Adjuncts or adapters
  290     ..For central area of disc (e.g., hole size or drive sticker)
  291     ..Protectors
  292     MISCELLANEOUS