Hierarchy/Derived subclasses
70 / 266 | -> 336 | -> 416 | -> 423 | -> 427 | -> 428 |
uspto searches
Patent Apps in 70/427Granted Patents in 70/427
Use the links above or do an advanced search in ppubs for:
(70/427.ccls. or 70/428.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.