Hierarchy/Derived subclasses
707 / 821 | -> 822 | -> 824 |
uspto searches
Patent Apps in 707/824Granted Patents in 707/824
Use the links above or do an advanced search in ppubs for:
(707/824.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.