Hierarchy/Derived subclasses
| 348 / 169 | -> 170 | -> 171 |
| -> 172 |
uspto searches
Patent Apps in 348/169Granted Patents in 348/169
Use the links above or do an advanced search in ppubs for:
(348/169.ccls. or 348/170.ccls. or 348/171.ccls. or 348/172.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.