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 = '219') AND (category.subclass = '521') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '219'; Subclass is '521';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1940 | ||||||
U | 2,210,583 | August 6, 1940 | Mold Glass block mold |
HENRY, Kenneth M. |
OI | Owens-Illinois Glass Co. |
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