Hierarchy/Derived subclasses
334 / 17 | -> 18 | -> 20 | -> 22 |
uspto searches
Patent Apps in 334/22Granted Patents in 334/22
Use the links above or do an advanced search in ppubs for:
(334/22.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.