Hierarchy/Derived subclasses
D11 / 131 | -> 143 | -> 18 | -> 152 | -> 153 | -> 154 |
uspto searches
Patent Apps in D11/152Granted Patents in D11/152
Use the links above or do an advanced search in ppubs for:
(D11/152.ccls. or D11/153.ccls. or D11/154.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.