Hierarchy/Derived subclasses
| 109 / 1r | -> 1s |
uspto searches
Patent Apps in 109/1SGranted Patents in 109/1S
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.