Hierarchy/Derived subclasses
| 180 / 7.1 | -> 8.1 | -> 8.3 | -> 8.4 |
uspto searches
Patent Apps in 180/8.3Granted Patents in 180/8.3
Use the links above or do an advanced search in ppubs for:
(180/8.3.ccls. or 180/8.4.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.