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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 = '501') AND (category.subclass = '64') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '501'; Subclass is '64';

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T / S Patent Date Description Patentee Category Assigned To
U 1,449,793 March 27, 1923 Glass and Process of Making Same
Boro-silicate glass made colorless by adding neodymium oxide
TAYLOR, William C.
Boron Corning Glass Works

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