Hierarchy/Derived subclasses
52 / 27 | -> 29 | -> 30 |
-> 31 | ||
-> 32 |
uspto searches
Patent Apps in 52/29Granted Patents in 52/29
Use the links above or do an advanced search in ppubs for:
(52/29.ccls. or 52/30.ccls. or 52/31.ccls. or 52/32.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.