Hierarchy/Derived subclasses
298 / 17r | -> 19r | -> 22r | -> 22b |
uspto searches
Patent Apps in 298/22BGranted Patents in 298/22B
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.