Hierarchy/Derived subclasses
| 368 / 21 | -> 22 | |
| -> 23 | -> 24 | |
| -> 25 | ||
| -> 26 | ||
| -> 27 |
uspto searches
Patent Apps in 368/21Granted Patents in 368/21
Use the links above or do an advanced search in ppubs for:
(368/21.ccls. or 368/22.ccls. or 368/23.ccls. or 368/24.ccls. or 368/25.ccls. or 368/26.ccls. or 368/27.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.