Hierarchy/Derived subclasses
348 / 207.99 | -> 220.1 | -> 221.1 |
uspto searches
Patent Apps in 348/220.1Granted Patents in 348/220.1
Use the links above or do an advanced search in ppubs for:
(348/220.1.ccls. or 348/221.1.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.