Hierarchy/Derived subclasses
D3 / 1 | -> 2 | -> 3 |
-> 4 |
uspto searches
Patent Apps in D3/1Granted Patents in D3/1
Use the links above or do an advanced search in ppubs for:
(D3/1.ccls. or D3/2.ccls. or D3/3.ccls. or D3/4.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.