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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 = '315') ORDER BY assigned_to ASC, date, patent, type

Total of 3 patents found where: Class is '315';

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T / S Patent Date Description Patentee Category Assigned To
U 883,303 March 31, 1908 Security Lightning Arrester
Lightning rod with multiple separate points arranged along the conductor on the edges of the roof		 DRAKE, William E.
 Lightning Rod Point  
 General Electric Co.
U 1,449,694 March 27, 1923 Protective Device
Protective device to prevent arcing		 PEEK, JR., Frank W.
 Miscellaneous General Electric Co.
 Locke Insulator Corp.
U 1,976,378 October 9, 1934 Aviation Marker
Aviation warning light attached to a suspension insulator		 VROOMAN, Edward C.
 Misc Locke Insulator Corp.

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