Hierarchy/Derived subclasses
194 / 302 | -> 303 | -> 320 | -> 321 | -> 322 |
uspto searches
Patent Apps in 194/322Granted Patents in 194/322
Use the links above or do an advanced search in ppubs for:
(194/322.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.