Hierarchy/Derived subclasses
| 273 / 138.1 | -> 142r | -> 143r | -> 143c |
uspto searches
Patent Apps in 273/143CGranted Patents in 273/143C
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.