Hierarchy/Derived subclasses
429 / 122 | -> 188 | -> 304 | -> 321 | -> 322 | -> 323 |
uspto searches
Patent Apps in 429/321Granted Patents in 429/321
Use the links above or do an advanced search in ppubs for:
(429/321.ccls. or 429/322.ccls. or 429/323.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.