Description: 321 / (12) Current Conversion (E.G. Rectification, Derectification) (65) A.C. to D.C. Conversion (e.g., Rectification, Converter) (68) Mechanical Switch Type Converter (72) With Commutator Inductor or Reactor

Hierarchy/Derived subclasses

321 / 12	-> 65	-> 68	-> 72	-> 73
				-> 74

CIPO searches

search just 321/72

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((321/72 <IN> CPC) <OR> (321/73 <IN> CPC) <OR> (321/74 <IN> CPC))

This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find patents in those subclasses.

Display:

Back