Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 502/103Granted Patents in 502/103
Use the links above or do an advanced search in ppubs for:
(502/103.ccls. or 502/104.ccls. or 502/105.ccls. or 502/106.ccls. or 502/107.ccls. or 502/108.ccls. or 502/109.ccls. or 502/110.ccls. or 502/111.ccls. or 502/112.ccls. or 502/113.ccls. or 502/114.ccls. or 502/115.ccls. or 502/116.ccls. or 502/117.ccls. or 502/118.ccls. or 502/119.ccls. or 502/120.ccls. or 502/121.ccls. or 502/122.ccls. or 502/123.ccls. or 502/124.ccls. or 502/125.ccls. or 502/126.ccls. or 502/127.ccls. or 502/128.ccls. or 502/129.ccls. or 502/130.ccls. or 502/131.ccls. or 502/132.ccls. or 502/133.ccls. or 502/134.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.