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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 = '313') AND (category.subclass = '509') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '313'; Subclass is '509';

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T / S Patent Date Description Patentee Category Assigned To
U 3,166,687 January 19, 1965 Transparent Electroluminescent Cell and Glass Block
Glass Block with internal illumination
VERES, Frank
OI Owens-Illinois Glass Co.

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