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: 191
 Class Title: ELECTRICITY: TRANSMISSION TO VEHICLES

Subclass  Subclass
Number    Title

  1 R     MISCELLANEOUS
  1 A     .Electroplating contact rolls
  2       SYSTEMS OF DISTRIBUTION
  3       .Convertible, multiple current source
  4       ..Internal and external
  5       ..Alternating direct
  6       .Sectional
  7       .Alternating-alternating
  8       .Safety cut-out
  9       DRAWBRIDGE AND TRANSFER TABLE
  10      MAGNETIC INDUCTION
  11      VEHICLE IN SERIES
  12 R    FLEXIBLE EXTENSIONS
  12.2 R  .Reels
  12.4    ..With connector plug or receptacle
  12.2 A  ..Motor-operated
  12 S    .Electric iron stands
  12 C    .Chain protectors
  13      PLATE CONDUCTOR
  14      SECTIONAL CONDUCTOR
  15      .Normally live section
         .Normally dead section
  16      ..Magnetomechanical circuit controller
  17      ..Magnetic circuit controller
  18      ...Magnet on vehicle
  19      ....Traveling controller
  20      ..Mechanical circuit controller
  21      ...Deformable conductor
  22 R    CONDUCTORS
  23 R    .Conduit
  24      ..Asymmetric
  25      ..Closing
  26      ..Draining
  27      ..Heated
  28      ..Special modifications
  23 A    ..Overhead conduit conductors
  29 R    .Third rail
  30      ..Protected
  31      ...Closing
  32      ..Supports
  29 DM   ..Conductor made from different materials
  33 R    .Trolley
  34      ..Nonunderrunning
  35      ..Guarded
  36      ..Special intersections
  37      ..Crossings
  38      ..Switches
  39      ..Section insulators
  40      ..Supports
  41      ...Catenary
  42      ...Combined ears and insulator
  43      ...Earss
  44      ....Splices
  44.1    ..Splicers
  33 PM   ..Cables made of multiple material
  22 C    .At or below ground surface
  22 DM   .Rail, made of multiple materials
  45 R    COLLECTORS
  46      .Convertible
  47      .Bar
  48      .Conduit plow
  49      .Third-rail shoe
  50      .Trolley
  51      ..Common wire passing
  52      ..Detachable
  53      ..Nonunderrunning
  54      ..Indefinite path
  55      ...Bow
  56      ...Roller
  57      ..Multiple contact
  58      ...Tandem
  59      ..Heads
  59.1    ...Sliding contact
  60      ...Swivel
  60.1    ....Center bias
  60.2    ...Lateral swing
  60.3    ...Vertical swing
  60.4    ...Axial slide
  60.5    ...Pole couplings
  61      ...Wheel to head contactor
  62      ...Ice clearers or preventers
  63      ...Wheels
  63.1    ....Quick release
  63.2    ....Lateral slide
  63.3    ....Universal mount
  63.4    ....Slidable pins
  63.5    ....Pin fasteners
  64      ..Poles
  65      ...Frames
  66      ..Stands
  67      ...Fluid pressure erector
  68      ...Spring erector
  69      ....Torsion
  70      ....Tension or compression
  71      ..Rope protectors
  72      ..Guards and finders
  73      ...Constantly operative
  74      ....Fixed
  75      ....Spiral cam replacer
  76      ....Star wheel
  77      ...Normally operative
  78      ....Automatic
  79      ....Rope-retracted
  80      .....Lateral swing
  81      .....Longitudinal swing
  82      ...Normally inoperative
  83      ....Automatic
  84      ....Rope-actuated
  85      .Trolley retrievers
  86      ..Erector releasee
  87      ...Fluid pressure erector
  88      ...Spring erector
  89      ....Toggle
  90      ..Fluid pressure-retracted
  91      ..Spring-retracted
  92      ...Rope-actuated
  93      ....Slack take-up
  94      ..Weight-retracted
  95      .Nonretracting trolley stops
  45 A    .Suspended conveyors