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 = '52') AND (category.subclass = '612') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '52'; Subclass is '612';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1935 | ||||||
U | 1,989,634 | January 29, 1935 | Glass Tile and Building Block Blocks and tiles made with colored surfaces |
COLLINS, Howard W. RUIZ, Eloy |
OI | Owens-Illinois Glass Co. |
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