Hierarchy/Derived subclasses
| 2 / 171 | -> 311 | -> 312 | -> 313 | |
| -> 314 | -> 315 | |||
| -> 316 | ||||
| -> 317 | ||||
| -> 318 | ||||
| -> 319 | ||||
| -> 320 |
uspto searches
Patent Apps in 2/312Granted Patents in 2/312
Use the links above or do an advanced search in ppubs for:
(2/312.ccls. or 2/313.ccls. or 2/314.ccls. or 2/315.ccls. or 2/316.ccls. or 2/317.ccls. or 2/318.ccls. or 2/319.ccls. or 2/320.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.