Hierarchy/Derived subclasses
| 24 / 31r | -> 31b |
uspto searches
Patent Apps in 24/31bGranted Patents in 24/31b
Use the links above or do an advanced search in ppubs for:
(24/31b.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.