Hierarchy/Derived subclasses
604 / 19 | -> 48 | -> 500 | -> 506 | -> 507 | -> 508 | -> 509 |
-> 510 |
uspto searches
Patent Apps in 604/507Granted Patents in 604/507
Use the links above or do an advanced search in ppubs for:
(604/507.ccls. or 604/508.ccls. or 604/509.ccls. or 604/510.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.