Hierarchy/Derived subclasses
D19 / 65 | -> 66 | -> 70 | -> 9 | -> 71 |
uspto searches
Patent Apps in D19/70Granted Patents in D19/70
Use the links above or do an advanced search in ppubs for:
(D19/70.ccls. or D19/9.ccls. or D19/71.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.