Description: 321 / (12) Current Conversion (E.G. Rectification, Derectification) (34) D.C. to A.C. Conversion (e.g., Derectification, Inverter) (41) Semiconductor Type Converter

Hierarchy/Derived subclasses

321 / 12	-> 34	-> 41	-> 42	-> 43	-> 44
					-> 45
					-> 46
					-> 47
				-> 48
				-> 49
				-> 50
				-> 51	-> 52
					-> 53
				-> 54
			-> 55	-> 56	-> 57
					-> 58
					-> 59
				-> 60
				-> 61
				-> 62

CIPO searches

search just 321/41

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((321/41 <IN> CPC) <OR> (321/42 <IN> CPC) <OR> (321/43 <IN> CPC) <OR> (321/44 <IN> CPC) <OR> (321/45 <IN> CPC) <OR> (321/46 <IN> CPC) <OR> (321/47 <IN> CPC) <OR> (321/48 <IN> CPC) <OR> (321/49 <IN> CPC) <OR> (321/50 <IN> CPC) <OR> (321/51 <IN> CPC) <OR> (321/52 <IN> CPC) <OR> (321/53 <IN> CPC) <OR> (321/54 <IN> CPC) <OR> (321/55 <IN> CPC) <OR> (321/56 <IN> CPC) <OR> (321/57 <IN> CPC) <OR> (321/58 <IN> CPC) <OR> (321/59 <IN> CPC) <OR> (321/60 <IN> CPC) <OR> (321/61 <IN> CPC) <OR> (321/62 <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.

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