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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 = '237') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '403'; Subclass is '237';

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T / S Patent Date Description Patentee Category Assigned To
 1915
U 1,128,261 February 9, 1915 Lightning Rod High Top
Lightning rod tripod attached to peak of roof and Y-connection for rod to conductor		 SWENSON, John S.
 Lightning Rod Electra Lightning Rod Co.

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