Hierarchy/Derived subclasses
| 144 / 329 | -> 335 | -> 336 | -> 338 |
uspto searches
Patent Apps in 144/338Granted Patents in 144/338
Use the links above or do an advanced search in ppubs for:
(144/338.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.