Hierarchy/Derived subclasses
257 / 9 | -> 1 | -> 2 | -> 3 | -> 12 | -> 14 | -> 15 | -> 16 | |
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uspto searches
Patent Apps in 257/14Granted Patents in 257/14
Use the links above or do an advanced search in ppubs for:
(257/14.ccls. or 257/15.ccls. or 257/16.ccls. or 257/17.ccls. or 257/18.ccls. or 257/19.ccls. or 257/20.ccls. or 257/21.ccls. or 257/22.ccls. or 257/23.ccls. or 257/24.ccls. or 257/25.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.