Hierarchy/Derived subclasses
| 107 / 15 | -> 20 | -> 21 |
| -> 22 | ||
| -> 23 |
CIPO searches
search just 107/20- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((107/20 <IN> CPC) <OR> (107/21 <IN> CPC) <OR> (107/22 <IN> CPC) <OR> (107/23 <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.