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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 = '174') AND (category.subclass = '75R') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '174'; Subclass is '75R';

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T / S Patent Date Description Patentee Category Assigned To
 1908
U 893,285 July 14, 1908 Electric Cable Insulator
Terminal insulator providing a tight seal between conductor running down through the center of the insulator		 TOMPKINS, Edward M.
 Insulator  

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