Description: 122 / (109) Fluid Treatment And Handling (127) External Boiler Circuit (134) Condensers (136) Surface Type

Hierarchy/Derived subclasses

122 / 109	-> 127	-> 134	-> 136	-> 137	-> 138
				-> 139
				-> 140	-> 141

CIPO searches

search just 122/136

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((122/136 <IN> CPC) <OR> (122/137 <IN> CPC) <OR> (122/138 <IN> CPC) <OR> (122/139 <IN> CPC) <OR> (122/140 <IN> CPC) <OR> (122/141 <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