Hierarchy/Derived subclasses
106 / 600 | -> 620 | -> 621 |
uspto searches
Patent Apps in 106/621Granted Patents in 106/621
Use the links above or do an advanced search in ppubs for:
(106/621.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.