Hierarchy/Derived subclasses
| 109 / 1r | -> 1s |
| -> 1v |
uspto searches
Patent Apps in 109/1rGranted Patents in 109/1r
Use the links above or do an advanced search in ppubs for:
(109/1r.ccls. or 109/1s.ccls. or 109/1v.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.