Hierarchy/Derived subclasses
131 / 290 | -> 313 | -> 315 | -> 316 | -> 317 |
uspto searches
Patent Apps in 131/316Granted Patents in 131/316
Use the links above or do an advanced search in ppubs for:
(131/316.ccls. or 131/317.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.