Hierarchy/Derived subclasses
172 / 126 | -> 130 | -> 131 |
uspto searches
Patent Apps in 172/131Granted Patents in 172/131
Use the links above or do an advanced search in ppubs for:
(172/131.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.