Hierarchy/Derived subclasses
236 / 67 | -> 68r | -> 68c |
uspto searches
Patent Apps in 236/68cGranted Patents in 236/68c
Use the links above or do an advanced search in ppubs for:
(236/68c.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.