Hierarchy/Derived subclasses
| 380 / 287 | -> 52 | -> 53 |
uspto searches
Patent Apps in 380/53Granted Patents in 380/53
Use the links above or do an advanced search in ppubs for:
(380/53.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.