USPC Class Details

Description: 322 electricity: single generator systems / 322 electricity: single generator systems/(44) generator control (59) with excitation winding and/or circuit control (72) control by electric space discharge

Hierarchy/Derived subclasses

322 / 44-> 59-> 72-> 73
   -> 74

uspto searches

Patent Apps in 322/72

Granted Patents in 322/72

Advanced search in patft or appft for the hierarchy would be:
(ccl/322/72 or ccl/322/73 or ccl/322/74)

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.