Hierarchy/Derived subclasses
187 / 250 | -> 276 | -> 277 | -> 287 |
uspto searches
Patent Apps in 187/287Granted Patents in 187/287
Use the links above or do an advanced search in ppubs for:
(187/287.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.