Hierarchy/Derived subclasses
| 236 / 67 | -> 79 | -> 80r | -> 80a |
| -> 80b | |||
| -> 80c | |||
| -> 80d | |||
| -> 80e | |||
| -> 80f | |||
| -> 80g |
uspto searches
Patent Apps in 236/80rGranted Patents in 236/80r
Use the links above or do an advanced search in ppubs for:
(236/80r.ccls. or 236/80a.ccls. or 236/80b.ccls. or 236/80c.ccls. or 236/80d.ccls. or 236/80e.ccls. or 236/80f.ccls. or 236/80g.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.