Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 411/259Granted Patents in 411/259
Use the links above or do an advanced search in ppubs for:
(411/259.ccls. or 411/260.ccls. or 411/261.ccls. or 411/262.ccls. or 411/263.ccls. or 411/264.ccls. or 411/265.ccls. or 411/266.ccls. or 411/267.ccls. or 411/268.ccls. or 411/269.ccls. or 411/270.ccls. or 411/271.ccls. or 411/272.ccls. or 411/273.ccls. or 411/274.ccls. or 411/275.ccls. or 411/276.ccls. or 411/277.ccls. or 411/278.ccls. or 411/279.ccls. or 411/280.ccls. or 411/281.ccls. or 411/282.ccls. or 411/283.ccls. or 411/284.ccls. or 411/285.ccls. or 411/286.ccls. or 411/287.ccls. or 411/288.ccls. or 411/289.ccls. or 411/290.ccls. or 411/291.ccls. or 411/292.ccls. or 411/293.ccls. or 411/294.ccls. or 411/295.ccls. or 411/296.ccls. or 411/297.ccls. or 411/298.ccls. or 411/299.ccls. or 411/300.ccls. or 411/301.ccls. or 411/302.ccls. or 411/303.ccls. or 411/304.ccls. or 411/305.ccls. or 411/306.ccls. or 411/307.ccls. or 411/308.ccls. or 411/309.ccls. or 411/310.ccls. or 411/311.ccls. or 411/312.ccls.)
At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.
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.