Hierarchy/Derived subclasses
D8 / 300 | -> 321 | -> 16 | -> 322 |
uspto searches
Patent Apps in D8/321Granted Patents in D8/321
Use the links above or do an advanced search in ppubs for:
(D8/321.ccls. or D8/16.ccls. or D8/322.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.