Hierarchy/Derived subclasses
| 312 / 140.1 | -> 140.2 | |
| -> 140.3 | -> 140.4 |
uspto searches
Patent Apps in 312/140.1Granted Patents in 312/140.1
Use the links above or do an advanced search in ppubs for:
(312/140.1.ccls. or 312/140.2.ccls. or 312/140.3.ccls. or 312/140.4.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.