Hierarchy/Derived subclasses
| 355 / 18 | -> 72 | -> 73 |
| -> 74 |
uspto searches
Patent Apps in 355/72Granted Patents in 355/72
Use the links above or do an advanced search in ppubs for:
(355/72.ccls. or 355/73.ccls. or 355/74.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.