USPC Class Details – HistoricIP

Description: 310 electrical generator or motor structure / 310 electrical generator or motor structure/(10) dynamoelectric (40r) rotary (127) plural collector-type machines (136) plural commutator type (137) double current d. c. machines

Hierarchy/Derived subclasses

310 / 10	-> 40r	-> 127	-> 136	-> 137	-> 138
					-> 139

uspto searches

Patent Apps in 310/137

Granted Patents in 310/137

Use the links above or do an advanced search in ppubs for:
(310/137.ccls. or 310/138.ccls. or 310/139.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.