Hierarchy/Derived subclasses
273 / 317 | -> 317.1 | -> 317.4 |
uspto searches
Patent Apps in 273/317.4Granted Patents in 273/317.4
Use the links above or do an advanced search in ppubs for:
(273/317.4.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.