Hierarchy/Derived subclasses
534 / 556 | -> 557 |
uspto searches
Patent Apps in 534/557Granted Patents in 534/557
Use the links above or do an advanced search in ppubs for:
(534/557.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.