Hierarchy/Derived subclasses
342 / 350 | -> 385 | -> 386 | -> 399 | -> 400 | -> 401 | -> 402 | -> 403 |
uspto searches
Patent Apps in 342/400Granted Patents in 342/400
Use the links above or do an advanced search in ppubs for:
(342/400.ccls. or 342/401.ccls. or 342/402.ccls. or 342/403.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.