Hierarchy/Derived subclasses
152 / 1 | -> 17 | -> 21 | -> 22 | -> 23 | -> 24 |
uspto searches
Patent Apps in 152/22Granted Patents in 152/22
Use the links above or do an advanced search in ppubs for:
(152/22.ccls. or 152/23.ccls. or 152/24.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.