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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 = '311') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '65'; Subclass is '311';

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T / S Patent Date Description Patentee Category Assigned To
 1909
U 937,137 October 19, 1909 Machine for Producing Glass Insulators
Press for making glass insulators		 ZURN, Charles M.
 Press  

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