Hierarchy/Derived subclasses
| 70 / 1 | -> 2 |
| -> 3 | |
| -> 4 |
CIPO searches
search just 70/1- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((70/1 <IN> CPC) <OR> (70/2 <IN> CPC) <OR> (70/3 <IN> CPC) <OR> (70/4 <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.