Hierarchy/Derived subclasses
| 129 / 4 | -> 5 | -> 23 | -> 25 | -> 26 |
CIPO searches
search just 129/25- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((129/25 <IN> CPC) <OR> (129/26 <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.