Hierarchy/Derived subclasses
| 404 / 17 | -> 47 | -> 56 | -> 57 | -> 58 |
uspto searches
Patent Apps in 404/57Granted Patents in 404/57
Use the links above or do an advanced search in ppubs for:
(404/57.ccls. or 404/58.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.