Description: 122 / (109) Fluid Treatment And Handling (127) External Boiler Circuit (128) Boiler Water Feed

Hierarchy/Derived subclasses

122 / 109	-> 127	-> 128	-> 129	-> 130
				-> 131
				-> 132
				-> 133

CIPO searches

search just 122/128

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((122/128 <IN> CPC) <OR> (122/129 <IN> CPC) <OR> (122/130 <IN> CPC) <OR> (122/131 <IN> CPC) <OR> (122/132 <IN> CPC) <OR> (122/133 <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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