Hierarchy/Derived subclasses
273 / 138.1 | -> 142r | -> 142j | -> 142jd |
uspto searches
Patent Apps in 273/142jdGranted Patents in 273/142jd
Use the links above or do an advanced search in ppubs for:
(273/142jd.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.