Hierarchy/Derived subclasses
706 / 902 | -> 919 | -> 923 |
uspto searches
Patent Apps in 706/923Granted Patents in 706/923
Use the links above or do an advanced search in ppubs for:
(706/923.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.