Hierarchy/Derived subclasses
24 / 31r | -> 33r | -> 33k |
uspto searches
Patent Apps in 24/33kGranted Patents in 24/33k
Use the links above or do an advanced search in ppubs for:
(24/33k.ccls.)
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.