Description: 122 / (18) Regulation (23) Boiler Water Feed
Hierarchy/Derived subclasses
CIPO searches
search just 122/23- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((122/23 <IN> CPC) <OR> (122/24 <IN> CPC) <OR> (122/25 <IN> CPC) <OR> (122/26 <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.