Hierarchy/Derived subclasses
| 28 / 1 | -> 16 | -> 23 | -> 24 |
| -> 25 |
CIPO searches
search just 28/23- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((28/23 <IN> CPC) <OR> (28/24 <IN> CPC) <OR> (28/25 <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.