Hierarchy/Derived subclasses
273 / 317 | -> 348 | -> 371 | -> 374 | -> 376 |
uspto searches
Patent Apps in 273/376Granted Patents in 273/376
Use the links above or do an advanced search in ppubs for:
(273/376.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.