Hierarchy/Derived subclasses
| 25 / 2 | -> 27 | -> 38 | -> 39 | -> 40 |
CIPO searches
search just 25/39- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((25/39 <IN> CPC) <OR> (25/40 <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.