Hierarchy/Derived subclasses
| 311 / 1 | -> 8 | -> 9 |
| -> 10 | ||
| -> 11 |
CIPO searches
search just 311/8- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((311/8 <IN> CPC) <OR> (311/9 <IN> CPC) <OR> (311/10 <IN> CPC) <OR> (311/11 <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.