Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 141/198Granted Patents in 141/198
Use the links above or do an advanced search in ppubs for:
(141/198.ccls. or 141/199.ccls. or 141/200.ccls. or 141/201.ccls. or 141/202.ccls. or 141/203.ccls. or 141/204.ccls. or 141/205.ccls. or 141/206.ccls. or 141/207.ccls. or 141/208.ccls. or 141/209.ccls. or 141/210.ccls. or 141/211.ccls. or 141/212.ccls. or 141/213.ccls. or 141/214.ccls. or 141/215.ccls. or 141/216.ccls. or 141/217.ccls. or 141/218.ccls. or 141/219.ccls. or 141/220.ccls. or 141/221.ccls. or 141/222.ccls. or 141/223.ccls. or 141/224.ccls. or 141/225.ccls. or 141/226.ccls. or 141/227.ccls. or 141/228.ccls. or 141/229.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.