Hierarchy/Derived subclasses
| 44 / 265 | -> 268 | -> 269 |
| -> 270 | ||
| -> 271 | ||
| -> 272 |
uspto searches
Patent Apps in 44/268Granted Patents in 44/268
Use the links above or do an advanced search in ppubs for:
(44/268.ccls. or 44/269.ccls. or 44/270.ccls. or 44/271.ccls. or 44/272.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.