Hierarchy/Derived subclasses
429 / 400 | -> 428 | -> 433 | -> 434 | -> 437 | -> 438 |
uspto searches
Patent Apps in 429/438Granted Patents in 429/438
Use the links above or do an advanced search in ppubs for:
(429/438.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.