Hierarchy/Derived subclasses
351 / 41 | -> 159.01 | -> 159.02 | -> 159.05 | -> 159.2 | -> 159.21 |
uspto searches
Patent Apps in 351/159.21Granted Patents in 351/159.21
Use the links above or do an advanced search in ppubs for:
(351/159.21.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.