Hierarchy/Derived subclasses
194 / 302 | -> 303 | -> 304 | -> 307 | -> 308 | -> 309 |
uspto searches
Patent Apps in 194/307Granted Patents in 194/307
Use the links above or do an advanced search in ppubs for:
(194/307.ccls. or 194/308.ccls. or 194/309.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.