Hierarchy/Derived subclasses
| D11 / 1 | -> 40 | -> 9 | -> 48 | -> 49 | -> 53 | -> 54 | -> 55 |
| -> 56 |
uspto searches
Patent Apps in D11/53Granted Patents in D11/53
Use the links above or do an advanced search in ppubs for:
(D11/53.ccls. or D11/54.ccls. or D11/55.ccls. or D11/56.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.