Hierarchy/Derived subclasses
| 355 / 400 | -> 407 | -> 408 |
uspto searches
Patent Apps in 355/407Granted Patents in 355/407
Use the links above or do an advanced search in ppubs for:
(355/407.ccls. or 355/408.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.