Description: 122 / (109) Fluid Treatment And Handling (127) External Boiler Circuit (128) Boiler Water Feed (129) With Heating
Hierarchy/Derived subclasses
CIPO searches
search just 122/129- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((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.