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 = '264') AND (category.subclass = '310') ORDER BY date DESC, patent, type |
Total of 1 patents found where: Class is '264'; Subclass is '310';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1933 | ||||||
U | 1,937,184 | November 28, 1933 | Jigger Jiggering machine using centrifugal force to cut out the interior of bushings |
AUSTIN, Arthur O. |
Manufacturing | The Ohio Brass Co. |
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