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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '411') AND (category.subclass = '400') ORDER BY specimen DESC, date, patent, type

Total of 3 patents found where: Class is '411'; Subclass is '400';

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T / S Patent Date Description Patentee Category Assigned To
U 419,642 January 21, 1890 Insulator for Electric Wires
Split ring with split ring holder and lag screw
CORNOG, Isaac P.
U 441,849 December 2, 1890 Electric Line Hook
Hook made of iron to secure line wire with threaded end to screw in crossarm
LOCKE, Fred M.
LAPP, John
Hook 1/3 to Theodore Norton
U 1,201,295 October 17, 1916 Insulator Support
Pin, cast metal with lag screw

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