Hierarchy/Derived subclasses
556 / 400 | -> 465 | -> 466 | -> 476 | -> 477 |
uspto searches
Patent Apps in 556/476Granted Patents in 556/476
Use the links above or do an advanced search in ppubs for:
(556/476.ccls. or 556/477.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.