Description: 126 / (15) Enclosed Combustion Chamber (46) Direct Heating Type (54) Liquid Fuel

Hierarchy/Derived subclasses

126 / 15	-> 46	-> 54	-> 55
			-> 56

CIPO searches

search just 126/54

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((126/54 <IN> CPC) <OR> (126/55 <IN> CPC) <OR> (126/56 <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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