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 = '179') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '432'; Subclass is '179';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1922 | ||||||
U | 1,432,706 | October 17, 1922 | Recuperator for Glass Furnaces and the Like Glass furnace design |
MCLAUGHLIN, William |
McLaughlin | 1/2 to Charles E. Norton |
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