Hierarchy/Derived subclasses
D3 / 201 | -> 232 | -> 245 | -> 246 |
uspto searches
Patent Apps in D3/246Granted Patents in D3/246
Use the links above or do an advanced search in ppubs for:
(D3/246.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.