Hierarchy/Derived subclasses
338 / 1 | -> 2 | -> 3 |
CIPO searches
search just 338/2- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((338/2 <IN> CPC) <OR> (338/3 <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.