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.

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Class Number: 353
 Class Title: OPTICS: IMAGE PROJECTORS

Subclass  Subclass
Number    Title

  1       KALEIDOSCOPIC
  2       .Including particles loosely housed for agitation
  3       HELIOSTATS
  4       ASCENDING HEATED AIR CHANGES PICTURES
  5       MAPPING OR AERIAL PHOTOGRAPH RECTIFYING
  6       .Stereoscopic
  7       STEREOSCOPIC
  8       .Polarizer
  9       .Slide transfer mechanism
  10      RELIEF ILLUSION
  11      TARGET, MAP OR NAVIGATION PROJECTION
  12      .With or for vehicle
  13      WITH OR FOR VEHICLE
  14      .Instrument indicator
  15      WITH SOUND ACCOMPANIMENT
  16      .Phonograph
  17      ..In carrying case
  18      ..Cabinet encloses projector and one side of screen
  19      .Common picture and sound record carrier system
  20      POLARIZER OR INTERFERENCE FILTER
  21      EDITING OR AUXILIARY VIEWING
  22      TRANSPARENT PLATE
  23      .Plate part of film gate
  24      ..Including lens support
  25      SELECTIVE DATA RETRIEVAL
  26 R    .Film strip
  26 A    ..Automatic
  27 R    .Plural picture rows on single microcard
  27 A    ..Automatic
  28      PROJECTED IMAGE COMBINED WITH REAL OBJECT
  29      ADDITIONAL ILLUMINATION OF OR NEAR PROJECTED IMAGE
  30      COMPOSITE PROJECTED IMAGE
  31      .Multicolor picture
  32      ..Lenticular film
  33      ..Prism
  34      .Plural projection paths with single light source
  35      .Slides and/or film superposed in projector
  36      .Letters or numbers
  37      .Reflector between lamp and screen
  38      UNITARY PLURAL REFRACTING SURFACES
  39      MICROPROJECTOR
  40      SCALE OR SCALE INDICATOR PROJECTOR
  41      .Vernier or plural scales
  42      POINTER
  43      GUN, FLASHLIGHT OR BATTERY OPERATED TYPE
  44      SIMULTANEOUS PROJECTION AND MANUAL DELINEATION
  45      .Score register
  46      IMAGE MOVES ON SCREEN
  47      .Cabinet enclosed projector and one side of screen
  48      .Plural projectors or projection paths
  49      ..Single light source
  50      .Reflector between lamp and screenn
  51      ..Plural
  52      TEMPERATURE CONTROL
  53      .Means to preheat slides or film
  54      .Liquid coolant
  55      .Heat filter
  56      .Heat resistant or insulating material
  57      .Blower
  58      ..Plural
  59      ..Common motor for blower and slide changer
  60      ..Air directed against face or back of object
  61      ..Particular air ducts or deflector
  62      STENCIL OR PERFORATED PLATE PROJECTOR (E.G., SKY OR CLOUD
           PROJECTOR)
  63      EPIDIASCOPE (I.E., SELECTIVE OPAQUE AND TRANSPARENCY PROJECTOR)
  64      .Plural reflectors between lamp and screen
  65      EPISCOPE (I.E., OPAQUE PROJECTOR)
  66      .Reflector between lamp and screen
  67      ..Cabinet encloses projector and one side of screen
  68      SELECTIVE SLIDE AND FILM STRIP PROJECTOR
  69      DISTORTION COMPENSATION
  70      .For projection axis inclined to screen
  71      SELECTIVE PROJECTION ON DISTANT OR CABINET SCREEN
  72      PROJECTOR OR SCREEN REMOVABLE FROM COMMON HOUSING
  73      .Plural reflectors between lamp and screen
  74      CABINET ENCLOSES PROJECTOR AND ONE SIDE OF SCREEN
  75      .Light shield, mask, hood, or diaphragm
  76      .Focus or variable magnification
  77      .Reflector between lamp and screen
  78      ..Plural
  79      STRUCTURALLY RELATED PROJECTOR AND SCREEN
  80      .Profile or silhouette
  81      PRISM IN LIGHT PATH
  82      PLURAL PROJECTION PATHS WITH SINGLE LIGHT SOURCE
  83      .Dissolve type
  84      COLOR FILTER
  85      LAMP CONTROL
  86      .Dissolve type
  87      .Lamp position adjustable
  88      SHUTTER
  89      .Plural projection paths
  90      ..Dissolve type
  91      .Solenoid operated
  92      .Slides reciprocated horizontally from magazine
  93      .Dissolve type
  94      PLURAL
  95      FILM GATE
  96      .And lens support
  97      LIGHT SHIELD, MASK, HOOD, OR DIAPHRAGM
  98      REFLECTOR
  99      .Plural
  100     LENS SUPPORT
  101     .Lens position adjustable
  102     PARTICULAR CONDENSER
  103     SLIDE TRANSFER MECHANISM
  104     .For slides of various dimensions
  105     .Magnetically operated
  106     ..Solenoid
  107     ...Rotary slide carrierr
  108     .Slides fixed to movable carrier
  109     ..Endless chain or belt
  110     ..Disc
  111     .Gravity operated
  112     ..Feeder magazine and receptacle
  113     .Feeder magazine and receiver magazine
  114     .Slides reciprocated horizontally
  115     ..Slides elevated
  116     ..From magazine
  117     ...Rotary magazine
  118     .Slides gripped or hooked
  119     HOUSING
  120     PICTURE CARRIER
  121     METHODS
  122     MISCELLANEOUS
  *       ******************************
  *       DIGESTS
  *       ******************************
  DIG 1   Slides stacked with surface to surface contact
  DIG 2   Film strip
  DIG 3   Transparent
  DIG 4   Opaque
  DIG 5   Transparency holder accessories
  DIG 6   Head accessories