Hierarchy/Derived subclasses
| 310 / 10 | -> 40r | -> 66 | -> 67r | -> 67a |
uspto searches
Patent Apps in 310/67rGranted Patents in 310/67r
Use the links above or do an advanced search in ppubs for:
(310/67r.ccls. or 310/67a.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.