Hierarchy/Derived subclasses
| 2 / 171 | -> 336 | -> 338 | -> 339 |
| -> 340 |
uspto searches
Patent Apps in 2/338Granted Patents in 2/338
Use the links above or do an advanced search in ppubs for:
(2/338.ccls. or 2/339.ccls. or 2/340.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.