Hierarchy/Derived subclasses
| 66 / 125r | -> 138 | -> 140r | -> 140s |
uspto searches
Patent Apps in 66/140sGranted Patents in 66/140s
Use the links above or do an advanced search in ppubs for:
(66/140s.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.