Hierarchy/Derived subclasses
| 404 / 9 | -> 10 | -> 11 |
| -> 12 | -> 13 | |
| -> 14 | ||
| -> 15 | -> 16 |
uspto searches
Patent Apps in 404/9Granted Patents in 404/9
Use the links above or do an advanced search in ppubs for:
(404/9.ccls. or 404/10.ccls. or 404/11.ccls. or 404/12.ccls. or 404/13.ccls. or 404/14.ccls. or 404/15.ccls. or 404/16.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.