Hierarchy/Derived subclasses
| 25 / 2 | -> 44 | -> 55 | -> 56 |
CIPO searches
search just 25/55- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((25/55 <IN> CPC) <OR> (25/56 <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.