Hierarchy/Derived subclasses
| 68 / 1 | -> 4 | -> 6 | -> 6.4 | -> 6.5 |
CIPO searches
search just 68/6.4- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((68/6.4 <IN> CPC) <OR> (68/6.5 <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.