Hierarchy/Derived subclasses
| 232 / 1r | -> 1b |
uspto searches
Patent Apps in 232/1bGranted Patents in 232/1b
Use the links above or do an advanced search in ppubs for:
(232/1b.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.