Hierarchy/Derived subclasses
100 / 1 | -> 8 | -> 17 | -> 18 | -> 19r | -> 20 | -> 21 | -> 22 |
uspto searches
Patent Apps in 100/21Granted Patents in 100/21
Use the links above or do an advanced search in ppubs for:
(100/21.ccls. or 100/22.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.