Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 307/11Granted Patents in 307/11
Use the links above or do an advanced search in ppubs for:
(307/11.ccls. or 307/12.ccls. or 307/13.ccls. or 307/14.ccls. or 307/15.ccls. or 307/16.ccls. or 307/17.ccls. or 307/18.ccls. or 307/19.ccls. or 307/20.ccls. or 307/21.ccls. or 307/22.ccls. or 307/23.ccls. or 307/24.ccls. or 307/25.ccls. or 307/26.ccls. or 307/27.ccls. or 307/28.ccls. or 307/29.ccls. or 307/30.ccls. or 307/31.ccls. or 307/32.ccls. or 307/33.ccls. or 307/34.ccls. or 307/35.ccls. or 307/36.ccls. or 307/37.ccls. or 307/38.ccls. or 307/39.ccls. or 307/40.ccls. or 307/41.ccls. or 307/42.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.