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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 = '65') AND (category.subclass = '250') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '65'; Subclass is '250';

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T / S Patent Date Description Patentee Category Assigned To
 1885
U 310,484 January 6, 1885 Press for the Manufacture of Insulators and other Glass Articles
Press for making insulators		 WEYMAN, George W.
 Press 1/2 to Charles T. Weyman

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