Description: 122 / (36) Boilers And Water Heaters (67) Fire Tube Boilers (68) Horizontal Tubes (71) Subjacent-Furnace

Hierarchy/Derived subclasses

122 / 36	-> 67	-> 68	-> 71	-> 72
				-> 73

CIPO searches

search just 122/71

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((122/71 <IN> CPC) <OR> (122/72 <IN> CPC) <OR> (122/73 <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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