Hierarchy/Derived subclasses
| 312 / 114 | -> 138.1 | -> 139 |
| -> 139.1 | ||
| -> 139.2 |
uspto searches
Patent Apps in 312/138.1Granted Patents in 312/138.1
Use the links above or do an advanced search in ppubs for:
(312/138.1.ccls. or 312/139.ccls. or 312/139.1.ccls. or 312/139.2.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.