Hierarchy/Derived subclasses
| 104 / 51 | -> 52 |
uspto searches
Patent Apps in 104/51Granted Patents in 104/51
Use the links above or do an advanced search in ppubs for:
(104/51.ccls. or 104/52.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.