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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 = '403') AND (category.subclass = '180') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '403'; Subclass is '180';

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T / S Patent Date Description Patentee Category Assigned To
 1925
U 1,558,268 October 20, 1925 Coupling for Sectional Rods
Lightning rod coupling the fits over spiralled rods and crimps tight against the end and screws to other couplings (see 1,140,052)
MAST, Louis L.
Lightning Rod Coupling  
 1931
U 1,794,934 March 3, 1931 Insulator Connector
Bracket for strain insulator
WALBERG, Nils A.
Bracket Westinghouse Electric & Mfg. Co.

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