Hierarchy/Derived subclasses
331 / 107r | -> 108r | -> 116r | -> 116fe |
-> 116m |
uspto searches
Patent Apps in 331/116rGranted Patents in 331/116r
Use the links above or do an advanced search in ppubs for:
(331/116r.ccls. or 331/116fe.ccls. or 331/116m.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.