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.


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363-131 121-55A 14-.5
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Class Number: 238
 Class Title: RAILWAYS: SURFACE TRACK

Subclass  Subclass
Number    Title

  1       MISCELLANEOUS
  2       ROADBED
  3       .Highway track
  4       ..Metallic
  5       ..Concrete
  6       .Continuous
  7       ..Concrete
  8       .Street crossing
  9       .Rail paving
  10 R    PORTABLE TRACK
  11      .Embankment or fill
  12      .Crossovers
  13      .House moving
  14      .Traction mats
  10 A    .Toy truck systems
  10 B    .Simulated roadbeds
  10 C    .Continuous roadbeds
  10 E    .Toy track, rail-guided
  10 F    .Toy track, slot-guided
  14.05   ELECTRICAL CONNECTIONS
  14.2    .From rail to noncontiguous rail or other object
  14.3    .Special rail
  14.4    .Combined rail joint or support
  14.5    ..Interposed conductor
  14.6    ...Rail web contacting
  14.7    ..With intermediate bond-wire support
  14.8    .Dowel pin or inserted key type
  14.9    .Protected bond
  14.1    .Plural or laminated bond
  14.11   ..On both sides of rails
  14.12   .Rail bond forms
  14.13   .Rail-head attached
  14.14   .Rail-base or flange attached
  14.15   ..Molded joint
  15      TRACK CURVES
  16      .Rollers
  17      GUARDRAILS
  18      .Spring
  19      .Under main rail
  20      .Two-rail chair
  21      .Two-rail clamps
  22      .Spacers
  23      ..Tapered
  24      STRINGERS
  25      .Concrete
  26      .Metallic
  27      TIE ARRANGEMENT
  28      .Diagonal
  29      TIES
  30      .Forms
  31      ..Jointed
  32      ...Hingedd
  33      ...Pivoted ends
  34      ..Detachable ends
  35      ..Multiple section
  36      ..Vertical sandwich
  37      ..Horizontal sandwich
  38      ..Twin
  39      ..Complementary sliding lock
  40      ..Truss
  41      ...Integral
  42      ..Stringer ends
  43      ..Loop or hook ends
  44      ..Spread ends
  45      ..Special
  46      ...Rail joint
  47      ...Bridge joint
  48      ...Spring
  49      ...Old rail
  50      .Rods
  51      ..Rail-base
  52      ..Turnbuckle
  53      ..Screw rod
  54      .Cross section
  55      ..Two-part
  56      ...Channels
  57      ...I-beam
  58      ...Angles or T's
  59      ..Channel flange down
  60      ...Sheet metal
  61      ...Rolled
  62      ..Channel flange up
  63      ...Sheet metal
  64      ...Rolled
  65      ..I-beam
  66      ...Rolled
  67      ..T-shape
  68      ...Cast
  69      ...Inverted
  70      ..Tubular
  71      ...Multiple
  72      ...Rectangular
  73      ....Vertical telescope
  74      ....Separate lid and bottom
  75      ....Separate bottom
  76      ....Separate lid
  77      ....Folded sheet
  78      ....Integral
  79      .....Cast
  80      ...Triangular
  81      ...Circular
  82      .Corrugated
  83      .Nonmetallic
  84      ..Plastic compound
  85      ...Internal reinforcements
  86      ....Truss
  87      ....Tube
  88      ....Cast
  89      ....Rolled section
  90      ....Closed loopp
  91      ....Rods
  92      .....Crosstied
  93      ....Foraminous sheet
  94      ....Wire
  95      ...Armored
  96      ....Box
  97      ....Tube
  98      ....Side and bottom
  99      ....Side and top
  100     ....Sides
  101     ....Top
  102     ....Top and bottom
  103     ....Bottom
  104     .End closures
  105     .Spacers
  106     .Anchor lugs and ribs
  107     .Insulation
  108     ..Sectional tie
  109     PEDESTALS
  110     .Pot
  111     ..Cast
  112     .Wrought plate
  113     ..Inverted "U"
  114     .Tube or box
  115     .Concrete block
  116     ..Chair bar
  117     ..Bar core
  118     .Wood block
  119     .Pier
  120     .Screw
  121     RAIL ARRANGEMENT
  122     RAILS
  123     .Rack
  124     .Turnout
  125     .Vignoles
  126     ..T-base insert
  127     .Channel
  128     ..Integral
  129     .Trough and filler
  130     .T-rail
  131     .Webless or flat
  132     .Reversible
  133     ..Triple head
  134     .Tubular
  135     ..Integral
  136     .Step tread
  137     .Biped
  138     .Base bar
  139     .Side bars
  140     .Detachable guard or step
  141     .Split base and web
  142     .Split tread
  143     .Detachable head
  144     ..Lap web
  145     ..Grooved web
  146     ..Integral grooved base
  147     ..Web clamp
  148     .Tread surfacess
  149     .Webs
  150     .Substance
  151     RAIL JOINTS
  152     .Insulated
  153     ..Transverse abutting
  154     ..Chair
  155     ...Twin
  156     ....Base plate or bolted
  157     ...Angle
  158     ....Weber type
  159     ..Splice bars
  160     ...With base plate
  161     ...In channel
  161.5   .Lubricant- or liquid-containing
  162     .Cast on
  163     .Molten filler
  164     .Welded
  165     .Switch rail
  166     .Pivoted
  167     .Compromise
  168     .Truss rod
  169     .Parallel beams
  170     .Gravity
  171     .Expansion deflectors
  172     .Vertical adjustment
  173     .Yielding rail end
  174     .Variable levels
  175     .Special rails
  176     ..Channels
  177     ..T-web U-base
  178     ..Flat
  179     .Internal key
  180     .Flush web key
  181     .Web key splice lock
  182     .Joint lug key
  183     .Integral web key and bars
  184     .Web locks
  185     .Z-form
  186     ..Base-connected
  187     .Chair
  188     ..Twin
  189     ...Base stiffener
  190     ...With base plate
  191     ...Base-bolted
  192     ...Lapping base sections
  193     ...Interlocked base sections
  194     ....Longitudinal keys
  195     ..Angle
  196     ...Pivoted
  197     ...Splice lug engagement
  198     ...Sliding splice lock
  199     ....Base plate underlap
  200     ...Weber type
  201     ...Transverse slide
  202     ....Screw-operated
  203     ....Horizontal wedge
  204     ....Vertical wedge
  205     ..Integrall
  206     ...Base filler
  207     ...One-side filler
  208     ...Two-side filler
  209     .Base plate
  210     ..Top flange
  211     ..Angle-bar underlap
  212     ..Angle-bar overlap
  213     ..Base stiffeners
  214     ..Distorted
  215     ..Center seat
  216     ..Rail lock
  217     ..Side clips
  218     .Tread bridge
  219     ..Rail-head insert
  220     ..Rail-head cover
  221     ..Notched head
  222     ...Twin
  223     ..Head section
  224     ...Saddle
  225     ..Rail section
  226     ...Splice key
  227     ..Spacer
  228     ...Expansible
  229     ..Web posts
  230     .Scarf
  231     ..Longitudinally assembled
  232     ...Twin
  233     ...With vertical drop
  234     ..Longitudinal or vertical
  235     ..Vertical drop
  236     ..Laterally assembled
  237     ...Twin
  238     ...Longitudinal lock
  239     ....Twin
  240     ..Angularly assembled
  241     ...Longitudinal
  242     ...Lateral
  243     .Splice bars
  244     ..Multiple part
  245     ..Toggle
  246     ..Rail guide
  247     ...Attached
  248     ..Rail sleeve
  249     ..Longitudinal bolts
  250     ..Bar lugs and splice keys
  251     ..Bar bolts and splice keys
  252     ..Slotted bolt locks
  253     ..Bolt keys
  254     ..Rail-groove swing
  255     ..Cam-tightened
  256     ..U-bars and loops
  257     ..Vertical bevel flange
  258     ..Tapered
  259     ..Springs
  260     ..Fasteners
  261     ...Double and split keys
  262     ..Nut and bolt lock
  263     ..Adjustable joint clampss
  264     RAIL SEATS
  265     .With anchor in concrete
  266     .English chair
  267     .T-rail
  268     .Inverted channel rail
  269     .Cast
  270     ..With tie
  271     ..Plane top
  272     .Wrought
  273     ..With tie
  274     ..Plane top
  275     .Twin jaws
  276     ..Wrought
  277     .Pivoted
  278     .Jaw and seat
  279     .Gravity
  280     .Saddles
  281     .Vertical adjustment
  282     .Lateral adjustment
  283     .Cushions
  284     ..Metal springs
  285     ..Wood blocks
  286     .Spiking blocks
  287     TIE-PLATES
  288     .Gauge
  289     .Plural tie
  290     .Lap
  291     ..Interlock
  292     .Rail brace
  293     ..Integral
  294     .Spike lock
  295     ..Lug on spike
  296     ..Pawl
  297     .Anchors
  298     ..Integral
  299     .Tie butting
  300     .Sleeve
  301     .Reversible
  302     ..Spring
  303     .Screw spike
  304     .Top surface
  305     .Rotary
  306     .Rail-base seats
  307     .Contour
  308     .Spike-hole arrangement
  309     .Spike-shank brace
  310     FASTENINGS
  311     .Welded
  312     .Protective boxes and closures
  313     .Universal
  314     .Yoke
  315     .Rail anchors
  316     ..Pawl
  317     ..Cam
  318     ..Rail recess
  319     ..Rail lug
  320     ..Distorted rail
  321     ..Tie contactt
  322     ...Cam
  323     ...Swinging clip
  324     ...Wedge
  325     ...Bevel slide
  326     ....Reversed lap
  327 R   ...Twin jaws
  328     ....With wedge
  327 A   ....Two-part, with lock
  329     ...Diagonal
  330     ....Integral
  331     .Transverse slide
  332     ..Screw-operated
  333     ..Horizontal wedge-operated
  334     ..Vertical wedge-operated
  335     .Abutting screw point
  336     .Rail brace
  337     ..Vertical slide
  338     .Clamps
  339     ..Gauge
  340     ..Multiple face
  341     ..Cam adjustment
  342     ..Nut type
  343     ..Anchors
  344     ...Vertical face
  345     ...Vertical shank
  346     ...Ratchet
  347     ..Bevel guide
  348     ..Internal arm
  349     ..Spring
  350     ..Integral with tie
  351     ..Clip type
  352     ...Double
  353     ...Vertical wedge
  354     ...Horizontal wedge
  355     ..Hooks
  356     ...Pivoted
  357     ...Twin
  358     ....Through bolt
  359     ....Single pivot
  360     ..Lever
  361     ..Wedges
  362     ...Parallel
  363     ...Aligned
  364     ...Flange
  365     ...Locks
  366     .Spikes
  367     ..Interlock
  368     ..Bent
  369     ..Split end
  370     ..Plug
  371     ..Socket
  372     ..Screw
  373     ...Sockets
  374     ..Socket and wedge
  375     ..Lock
  376     ..Ratchet
  377     .Bolt anchors and sleeves
  378     .U-bolts and clipss
  379     FOOT GUARDS
  380     .Switch point
  381     .Wheel-depressed
  382     DEADENING NOISE
  *       ******************************
  *       DIGEST
  *       ******************************
  DIG 1   Track structure assembled by gluing