Hierarchy/Derived subclasses
248 / 441.1 | -> 454 | -> 455 | -> 456 |
uspto searches
Patent Apps in 248/455Granted Patents in 248/455
Use the links above or do an advanced search in ppubs for:
(248/455.ccls. or 248/456.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.