Hierarchy/Derived subclasses
| 166 / 335 | -> 336 | -> 337 |
uspto searches
Patent Apps in 166/337Granted Patents in 166/337
Use the links above or do an advanced search in ppubs for:
(166/337.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.