Hierarchy/Derived subclasses
| 276 / 40 | -> 42 |
uspto searches
Patent Apps in 276/42Granted Patents in 276/42
Use the links above or do an advanced search in ppubs for:
(276/42.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.