Hierarchy/Derived subclasses
277 / 345 | -> 358 | -> 399 | -> 401 |
uspto searches
Patent Apps in 277/401Granted Patents in 277/401
Use the links above or do an advanced search in ppubs for:
(277/401.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.