Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 24/381Granted Patents in 24/381
Use the links above or do an advanced search in ppubs for:
(24/381.ccls. or 24/382.ccls. or 24/383.ccls. or 24/384.ccls. or 24/385.ccls. or 24/386.ccls. or 24/387.ccls. or 24/388.ccls. or 24/389.ccls. or 24/390.ccls. or 24/391.ccls. or 24/392.ccls. or 24/393.ccls. or 24/394.ccls. or 24/395.ccls. or 24/396.ccls. or 24/397.ccls. or 24/398.ccls. or 24/399.ccls. or 24/400.ccls. or 24/401.ccls. or 24/402.ccls. or 24/403.ccls. or 24/404.ccls. or 24/405.ccls. or 24/406.ccls. or 24/407.ccls. or 24/408.ccls. or 24/409.ccls. or 24/410.ccls. or 24/411.ccls. or 24/412.ccls. or 24/413.ccls. or 24/414.ccls. or 24/415.ccls. or 24/416.ccls. or 24/417.ccls. or 24/418.ccls. or 24/419.ccls. or 24/420.ccls. or 24/421.ccls. or 24/422.ccls. or 24/423.ccls. or 24/424.ccls. or 24/425.ccls. or 24/426.ccls. or 24/427.ccls. or 24/428.ccls. or 24/429.ccls. or 24/430.ccls. or 24/431.ccls. or 24/432.ccls. or 24/433.ccls. or 24/434.ccls. or 24/435.ccls. or 24/436.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.