Hierarchy/Derived subclasses
| 99 / 275 | -> 279 | -> 300 | -> 302r | -> 303 |
| -> 302c | ||||
| -> 302fb | ||||
| -> 302p |
uspto searches
Patent Apps in 99/302rGranted Patents in 99/302r
Use the links above or do an advanced search in ppubs for:
(99/302r.ccls. or 99/303.ccls. or 99/302c.ccls. or 99/302fb.ccls. or 99/302p.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.