Hierarchy/Derived subclasses
| 338 / 25 | -> 26 |
| -> 27 |
CIPO searches
search just 338/25- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((338/25 <IN> CPC) <OR> (338/26 <IN> CPC) <OR> (338/27 <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.