Hierarchy/Derived subclasses
342 / 350 | -> 450 | -> 454 | -> 456 |
uspto searches
Patent Apps in 342/456Granted Patents in 342/456
Use the links above or do an advanced search in ppubs for:
(342/456.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.