Hierarchy/Derived subclasses
226 / 10 | -> 15 | -> 18 | -> 19 | -> 20 |
-> 21 | -> 22 | |||
-> 23 |
uspto searches
Patent Apps in 226/18Granted Patents in 226/18
Use the links above or do an advanced search in ppubs for:
(226/18.ccls. or 226/19.ccls. or 226/20.ccls. or 226/21.ccls. or 226/22.ccls. or 226/23.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.