Hierarchy/Derived subclasses
225 / 15 | -> 16 | -> 21 | -> 22 |
CIPO searches
search just 225/21- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((225/21 <IN> CPC) <OR> (225/22 <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.