Hierarchy/Derived subclasses
429 / 400 | -> 523 | -> 530 | -> 531 |
uspto searches
Patent Apps in 429/531Granted Patents in 429/531
Use the links above or do an advanced search in ppubs for:
(429/531.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.