Hierarchy/Derived subclasses
404 / 17 | -> 34 | -> preformed | -> 37 | -> 38 | -> 39 |
uspto searches
Patent Apps in 404/37Granted Patents in 404/37
Use the links above or do an advanced search in ppubs for:
(404/37.ccls. or 404/38.ccls. or 404/39.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.