Hierarchy/Derived subclasses
273 / 108 | -> 127r | -> 127a |
-> 127b | ||
-> 127c | ||
-> 127d |
uspto searches
Patent Apps in 273/127rGranted Patents in 273/127r
Use the links above or do an advanced search in ppubs for:
(273/127r.ccls. or 273/127a.ccls. or 273/127b.ccls. or 273/127c.ccls. or 273/127d.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.