Hierarchy/Derived subclasses
416 / 204r | -> 213r | -> 213a |
uspto searches
Patent Apps in 416/213rGranted Patents in 416/213r
Use the links above or do an advanced search in ppubs for:
(416/213r.ccls. or 416/213a.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.