Hierarchy/Derived subclasses
128 / 846 | -> 869 | -> 870 | -> 871 |
uspto searches
Patent Apps in 128/871Granted Patents in 128/871
Use the links above or do an advanced search in ppubs for:
(128/871.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.