Hierarchy/Derived subclasses
331 / 107r | -> 108r | -> 108a |
uspto searches
Patent Apps in 331/108AGranted Patents in 331/108A
Use the links above or do an advanced search in ppubs for:
()
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.