Hierarchy/Derived subclasses
| 183 / 17 | -> 18 | -> 19 | -> 20 |
CIPO searches
search just 183/19- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((183/19 <IN> CPC) <OR> (183/20 <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.