Hierarchy/Derived subclasses
| 404 / 6 | -> 7 | -> 8 |
uspto searches
Patent Apps in 404/6Granted Patents in 404/6
Use the links above or do an advanced search in ppubs for:
(404/6.ccls. or 404/7.ccls. or 404/8.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.