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Class   290PRIME-MOVER DYNAMO PLANTS
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[List of Pre Grant Publications for class 290 subclass 1R][List of Patents for class 290 subclass 1R]  1R MISCELLANEOUS
 [List of Pre Grant Publications for class 290 subclass 1A][List of Patents for class 290 subclass 1A]1A Subclass 1A indent level is 1 Unitary plant
 [List of Pre Grant Publications for class 290 subclass 1B][List of Patents for class 290 subclass 1B]1B Subclass 1B indent level is 1 Air-cooled generator
 [List of Pre Grant Publications for class 290 subclass 1C][List of Patents for class 290 subclass 1C]1C Subclass 1C indent level is 1 Drive gearing
 [List of Pre Grant Publications for class 290 subclass 1D][List of Patents for class 290 subclass 1D]1D Subclass 1D indent level is 1 Chain drive
 [List of Pre Grant Publications for class 290 subclass 1E][List of Patents for class 290 subclass 1E]1E Subclass 1E indent level is 1 Spring motor
 [List of Pre Grant Publications for class 290 subclass 2][List of Patents for class 290 subclass 2]2 HEATING PLANTS
 [List of Pre Grant Publications for class 290 subclass 3][List of Patents for class 290 subclass 3]3 TRAIN
[List of Pre Grant Publications for class 290 subclass 4R][List of Patents for class 290 subclass 4R]  4R PLURAL PRIME MOVER
 [List of Pre Grant Publications for class 290 subclass 4A][List of Patents for class 290 subclass 4A]4A Subclass 4A indent level is 1 Tie with another generator
 [List of Pre Grant Publications for class 290 subclass 4B][List of Patents for class 290 subclass 4B]4B Subclass 4B indent level is 1 Induction generator
 [List of Pre Grant Publications for class 290 subclass 4C][List of Patents for class 290 subclass 4C]4C Subclass 4C indent level is 1 Plural with combined drive
 [List of Pre Grant Publications for class 290 subclass 4D][List of Patents for class 290 subclass 4D]4D Subclass 4D indent level is 1 Plural prime movers with fluid interconnection
 [List of Pre Grant Publications for class 290 subclass 5][List of Patents for class 290 subclass 5]5 ALTERNATING CURRENT, ROTARY FIELD AND ARMATURE
 [List of Pre Grant Publications for class 290 subclass 6][List of Patents for class 290 subclass 6]6 MULTIPLE-ARMATURE DYNAMO
[List of Pre Grant Publications for class 290 subclass 7][List of Patents for class 290 subclass 7]7 ELECTRIC CONTROL
 [List of Pre Grant Publications for class 290 subclass 8][List of Patents for class 290 subclass 8]8 Subclass 8 indent level is 1 Excitation dynamo
     Subclass indent level is 1 Traction
[List of Pre Grant Publications for class 290 subclass 9][List of Patents for class 290 subclass 9]9 Subclass 9 indent level is 2 Electric traction motor
[List of Pre Grant Publications for class 290 subclass 22][List of Patents for class 290 subclass 22]22 Subclass 22 indent level is 2 Starting and generating dynamo
 [List of Pre Grant Publications for class 290 subclass 27][List of Patents for class 290 subclass 27]27 Subclass 27 indent level is 2 Electric-starting motor with generator
 [List of Pre Grant Publications for class 290 subclass 28][List of Patents for class 290 subclass 28]28 Subclass 28 indent level is 2 Electric-starting motor
 [List of Pre Grant Publications for class 290 subclass 29][List of Patents for class 290 subclass 29]29 Subclass 29 indent level is 2 Rotary field and armature
[List of Pre Grant Publications for class 290 subclass 30R][List of Patents for class 290 subclass 30R]  30R Subclass 30R indent level is 1 Demand starters
 [List of Pre Grant Publications for class 290 subclass 30A][List of Patents for class 290 subclass 30A]30A Subclass 30A indent level is 2 Standby source
 [List of Pre Grant Publications for class 290 subclass 30B][List of Patents for class 290 subclass 30B]30B Subclass 30B indent level is 2 Standby service
[List of Pre Grant Publications for class 290 subclass 31][List of Patents for class 290 subclass 31]31 Subclass 31 indent level is 1 Starting and generating dynamo
[List of Pre Grant Publications for class 290 subclass 32][List of Patents for class 290 subclass 32]32 Subclass 32 indent level is 2 With generator
[List of Pre Grant Publications for class 290 subclass 34][List of Patents for class 290 subclass 34]34 Subclass 34 indent level is 2 Engine control
[List of Pre Grant Publications for class 290 subclass 36R][List of Patents for class 290 subclass 36R]  36R Subclass 36R indent level is 1 Electric-starting motor with generator
[List of Pre Grant Publications for class 290 subclass 37R][List of Patents for class 290 subclass 37R]  37R Subclass 37R indent level is 2 Ignition
 [List of Pre Grant Publications for class 290 subclass 36A][List of Patents for class 290 subclass 36A]36A Subclass 36A indent level is 2 Automatic starters including centrifugally operated contactors
[List of Pre Grant Publications for class 290 subclass 38R][List of Patents for class 290 subclass 38R]  38R Subclass 38R indent level is 1 Electric-starting motor
 [List of Pre Grant Publications for class 290 subclass 38A][List of Patents for class 290 subclass 38A]38A Subclass 38A indent level is 2 Axially movable armatures
 [List of Pre Grant Publications for class 290 subclass 38B][List of Patents for class 290 subclass 38B]38B Subclass 38B indent level is 2 Inertia starters
 [List of Pre Grant Publications for class 290 subclass 38C][List of Patents for class 290 subclass 38C]38C Subclass 38C indent level is 2 Miscellaneous collection of automatic engine starters
 [List of Pre Grant Publications for class 290 subclass 38D][List of Patents for class 290 subclass 38D]38D Subclass 38D indent level is 2 Stop cranking responsive to manifold conditions
 [List of Pre Grant Publications for class 290 subclass 38E][List of Patents for class 290 subclass 38E]38E Subclass 38E indent level is 2 Automatic starter including pedal control
 [List of Pre Grant Publications for class 290 subclass 39][List of Patents for class 290 subclass 39]39 Subclass 39 indent level is 1 Rotary field and armature
[List of Pre Grant Publications for class 290 subclass 40R][List of Patents for class 290 subclass 40R]  40R Subclass 40R indent level is 1 Engine control
 [List of Pre Grant Publications for class 290 subclass 41][List of Patents for class 290 subclass 41]41 Subclass 41 indent level is 2 Ignition
 [List of Pre Grant Publications for class 290 subclass 40A][List of Patents for class 290 subclass 40A]40A Subclass 40A indent level is 2 Control in response to engine speed
 [List of Pre Grant Publications for class 290 subclass 40B][List of Patents for class 290 subclass 40B]40B Subclass 40B indent level is 2 Control in response to generator line conditions
 [List of Pre Grant Publications for class 290 subclass 40C][List of Patents for class 290 subclass 40C]40C Subclass 40C indent level is 2 Control in response to generator and prime mover conditions
 [List of Pre Grant Publications for class 290 subclass 40D][List of Patents for class 290 subclass 40D]40D Subclass 40D indent level is 2 Control in response to a time standard
 [List of Pre Grant Publications for class 290 subclass 40E][List of Patents for class 290 subclass 40E]40E Subclass 40E indent level is 2 Circuit resonant at given frequency
 [List of Pre Grant Publications for class 290 subclass 40F][List of Patents for class 290 subclass 40F]40F Subclass 40F indent level is 2 Control in response to D. C. generator output
 [List of Pre Grant Publications for class 290 subclass 42][List of Patents for class 290 subclass 42]42 Subclass 42 indent level is 1 Tide and wave motors
[List of Pre Grant Publications for class 290 subclass 43][List of Patents for class 290 subclass 43]43 Subclass 43 indent level is 1 Fluid-current motors
 [List of Pre Grant Publications for class 290 subclass 44][List of Patents for class 290 subclass 44]44 Subclass 44 indent level is 2 Wind
 [List of Pre Grant Publications for class 290 subclass 45][List of Patents for class 290 subclass 45]45 TRACTION
 [List of Pre Grant Publications for class 290 subclass 46][List of Patents for class 290 subclass 46]46 STARTING AND GENERATING DYNAMO
 [List of Pre Grant Publications for class 290 subclass 47][List of Patents for class 290 subclass 47]47 ELECTRIC-STARTING MOTOR WITH GENERATOR
 [List of Pre Grant Publications for class 290 subclass 48][List of Patents for class 290 subclass 48]48 ELECTRIC-STARTING MOTOR
 [List of Pre Grant Publications for class 290 subclass 49][List of Patents for class 290 subclass 49]49 ROTARY FIELD AND ARMATURE
 [List of Pre Grant Publications for class 290 subclass 50][List of Patents for class 290 subclass 50]50 BATTERY
 [List of Pre Grant Publications for class 290 subclass 51][List of Patents for class 290 subclass 51]51 ENGINE CONTROL
 [List of Pre Grant Publications for class 290 subclass 52][List of Patents for class 290 subclass 52]52 TURBOGENERATORS
 [List of Pre Grant Publications for class 290 subclass 53][List of Patents for class 290 subclass 53]53 TIDE AND WAVE MOTORS
[List of Pre Grant Publications for class 290 subclass 54][List of Patents for class 290 subclass 54]54 FLUID-CURRENT MOTORS
 [List of Pre Grant Publications for class 290 subclass 55][List of Patents for class 290 subclass 55]55 Subclass 55 indent level is 1 Wind
 
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