Hierarchy/Derived subclasses
| 313 / 35 | -> 35.32 | -> 35.321 | -> 35.322 |
CIPO searches
search just 313/35.321- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((313/35.321 <IN> CPC) <OR> (313/35.322 <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.