Hierarchy/Derived subclasses
| 311 / 1 | -> 13 | -> 16 | -> 18 | -> 19 | -> 20 |
| -> 21 | |||||
| -> 22 |
CIPO searches
search just 311/18- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((311/18 <IN> CPC) <OR> (311/19 <IN> CPC) <OR> (311/20 <IN> CPC) <OR> (311/21 <IN> CPC) <OR> (311/22 <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.