Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 266/48Granted Patents in 266/48
Use the links above or do an advanced search in ppubs for:
(266/48.ccls. or 266/49.ccls. or 266/50.ccls. or 266/51.ccls. or 266/52.ccls. or 266/53.ccls. or 266/54.ccls. or 266/55.ccls. or 266/56.ccls. or 266/57.ccls. or 266/58.ccls. or 266/59.ccls. or 266/60.ccls. or 266/61.ccls. or 266/62.ccls. or 266/63.ccls. or 266/64.ccls. or 266/65.ccls. or 266/66.ccls. or 266/67.ccls. or 266/68.ccls. or 266/69.ccls. or 266/70.ccls. or 266/71.ccls. or 266/72.ccls. or 266/73.ccls. or 266/74.ccls. or 266/75.ccls. or 266/76.ccls. or 266/77.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.