Hierarchy/Derived subclasses
D19 / 9 | -> 11 | -> 2 |
uspto searches
Patent Apps in D19/11Granted Patents in D19/11
Use the links above or do an advanced search in ppubs for:
(D19/11.ccls. or D19/2.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.