Hierarchy/Derived subclasses
| 224 / 400 | -> 412 | -> 415 |
uspto searches
Patent Apps in 224/415Granted Patents in 224/415
Use the links above or do an advanced search in ppubs for:
(224/415.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.