Hierarchy/Derived subclasses
26 / 18.5 | -> 19 | -> 20 | -> 21 |
uspto searches
Patent Apps in 26/21Granted Patents in 26/21
Use the links above or do an advanced search in ppubs for:
(26/21.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.