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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 = '73') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '501'; Subclass is '73';

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T / S Patent Date Description Patentee Category Assigned To
 1925
U 1,529,259 March 10, 1925 Glass
Alumino-silicate glass (Corning's Flameware)		 LOCKE, Fred M.
LOCKE, Fred J.
 Alumino  

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