Description: 122 / (36) Boilers And Water Heaters (40) Waste Heat Boilers
Hierarchy/Derived subclasses
CIPO searches
search just 122/40- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((122/40 <IN> CPC) <OR> (122/41 <IN> CPC) <OR> (122/42 <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.