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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 = '540') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '65'; Subclass is '540';

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T / S Patent Date Description Patentee Category Assigned To
 1973
U 3,779,730 December 18, 1973 Control for Glass Marble, Feeding, Melting, and Fiber Forming Unit
Machine for feeding, melting, and making fibers from glass marbles.		 RAMGE, Dennis Lee
 Glass Marble Johns-Manville Corp.

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