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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 = '361') AND (category.subclass = '133') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '361'; Subclass is '133';

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T / S Patent Date Description Patentee Category Assigned To
 1909
U 911,973 February 9, 1909 Insulating High-Voltage Transmission-Lines
Use of steel coil attached to insulator (instead of the conductor) to offer resistance to control lightning surge and protect the insulator		 GODDARD, Walter T.
 Lightning The Locke Insulator Mfg. Co.

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