Hierarchy/Derived subclasses
222 / 129 | -> 142.1 | -> 142.4 |
uspto searches
Patent Apps in 222/142.4Granted Patents in 222/142.4
Use the links above or do an advanced search in ppubs for:
(222/142.4.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.