Hierarchy/Derived subclasses
| 248 / 441.1 | -> 458 |
uspto searches
Patent Apps in 248/458Granted Patents in 248/458
Use the links above or do an advanced search in ppubs for:
(248/458.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.