Hierarchy/Derived subclasses
| 112 / 12 | -> 19 | -> 21 | -> 22 |
CIPO searches
search just 112/21- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((112/21 <IN> CPC) <OR> (112/22 <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.