USPC Class Details – HistoricIP

Description: 361 electricity: electrical systems and devices / 361 electricity: electrical systems and devices/(139) control circuits for electromagnetic devices (159) including means for using, or compensating for, the induced emf of the electromagnetic device

Hierarchy/Derived subclasses

361 / 139

-> 159

uspto searches

Patent Apps in 361/159

Granted Patents in 361/159

Use the links above or do an advanced search in ppubs for:
(361/159.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.