Hierarchy/Derived subclasses
26 / 69r | -> 69a |
uspto searches
Patent Apps in 26/69AGranted Patents in 26/69A
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.