Hierarchy/Derived subclasses
| 404 / 17 | -> 22 | -> 23 |
| -> 24 |
uspto searches
Patent Apps in 404/22Granted Patents in 404/22
Use the links above or do an advanced search in ppubs for:
(404/22.ccls. or 404/23.ccls. or 404/24.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.