Hierarchy/Derived subclasses
| 331 / 107r | -> 108r | -> 111 | -> 113r | -> 113a |
| -> 113s |
uspto searches
Patent Apps in 331/113rGranted Patents in 331/113r
Use the links above or do an advanced search in ppubs for:
(331/113r.ccls. or 331/113a.ccls. or 331/113s.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.