Hierarchy/Derived subclasses
| 270 / 32 | -> 45 | -> 51 |
uspto searches
Patent Apps in 270/51Granted Patents in 270/51
Use the links above or do an advanced search in ppubs for:
(270/51.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.