Hierarchy/Derived subclasses
338 / 68 | -> 70 | -> 71 |
-> 72 | ||
-> 73 | ||
-> 74 |
uspto searches
Patent Apps in 338/70Granted Patents in 338/70
Use the links above or do an advanced search in ppubs for:
(338/70.ccls. or 338/71.ccls. or 338/72.ccls. or 338/73.ccls. or 338/74.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.