Description: 319 / (1) Fuel Cells (15) Current Collectors (Electrodes) (17) Metal or Metal alloy Base
Hierarchy/Derived subclasses
CIPO searches
search just 319/17- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((319/17 <IN> CPC) <OR> (319/18 <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.