Hierarchy/Derived subclasses
65 / 483 | -> 521 | -> 522 | -> 523 |
uspto searches
Patent Apps in 65/521Granted Patents in 65/521
Use the links above or do an advanced search in ppubs for:
(65/521.ccls. or 65/522.ccls. or 65/523.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.