| 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 = '432') AND (category.subclass = '211') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '432'; Subclass is '211';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1909 | ||||||
| U | 925,864 | June 22, 1909 | Glass Furnace Glass furnace designed to be tilted in order to pour out molten glass |
BROOKE, Homer |
Glass | |
| 1961 | ||||||
| U | 2,975,499 | March 21, 1961 | Ceramic Tunnel Kiln More fuel efficient tunnel kiln for burning ceramic ware and produces a more uniform quality of porcelain. |
LAPP, Grover W. |
Tunnel Kiln | |
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