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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 = '156') AND (category.subclass = '286') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '156'; Subclass is '286';

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T / S Patent Date Description Patentee Category Assigned To
 1935
U 2,010,934 August 13, 1935 Cementing Process and Apparatus
Apparatus to align the pin during the cementing process in a suspension insulator		 SMITH, William A.
 Manufacturing The Ohio Brass Co.

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