USPC Class Details

Description: 322 electricity: single generator systems / 322 electricity: single generator systems/(44) generator control (89) with armature or primary circuit control (91) short-circuiting of windings

Hierarchy/Derived subclasses

322 / 44-> 89-> 91-> 92

uspto searches

Patent Apps in 322/91

Granted Patents in 322/91

Advanced search in patft or appft for the hierarchy would be:
(ccl/322/91 or ccl/322/92)

Press the Search button below to send the query to the USPTO site. (Granted patents search)

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.