Hierarchy/Derived subclasses
235 / 435 | -> 439 | -> 454 | -> 469 |
uspto searches
Patent Apps in 235/469Granted Patents in 235/469
Use the links above or do an advanced search in ppubs for:
(235/469.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.