Hierarchy/Derived subclasses
| 392 / 301 | -> 304 |
uspto searches
Patent Apps in 392/304Granted Patents in 392/304
Use the links above or do an advanced search in ppubs for:
(392/304.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.