Hierarchy/Derived subclasses
376 / 273 | -> 274 |
uspto searches
Patent Apps in 376/274Granted Patents in 376/274
Use the links above or do an advanced search in ppubs for:
(376/274.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.