Hierarchy/Derived subclasses
| 70 / 14 | -> 20 | -> 22 | -> 23 | ||
| -> 24 | -> 25 | -> 26 | |||
| -> 27 | -> 28 | ||||
| -> 29 | |||||
| -> 30 |
uspto searches
Patent Apps in 70/22Granted Patents in 70/22
Use the links above or do an advanced search in ppubs for:
(70/22.ccls. or 70/23.ccls. or 70/24.ccls. or 70/25.ccls. or 70/26.ccls. or 70/27.ccls. or 70/28.ccls. or 70/29.ccls. or 70/30.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.