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 (75) control by circuit impedance (80) resistance (82) pressure-varied resistance

Hierarchy/Derived subclasses

322 / 44-> 59-> 75-> 80-> 82

uspto searches

Patent Apps in 322/82

Granted Patents in 322/82

Advanced search in patft or appft for the hierarchy would be:
(ccl/322/82)

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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.
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