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 = '425') AND (category.subclass = '355') ORDER BY specimen ASC, date, patent, type |
Total of 2 patents found where: Class is '425'; Subclass is '355';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1941 | ||||||
U | 2,234,604 | March 11, 1941 | Molding Apparatuse Automatic press for molding nail knobs |
PECK, Lee H. |
Press | Porcelain Products, Inc. |
1947 | ||||||
U | 2,415,462 | February 11, 1947 | Ceramic Molding Press Vacuum molding of clay articles such as insulators. This may be the patent used by Locke to make their ""vacuum dry pressing"" porcelain insulators. |
CHERRY, George L. VEALE, Charles C. |
Press | Western Electric Co. |
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