| 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 = '84') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '425'; Subclass is '84';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1935 | ||||||
| U | 2,007,567 | July 9, 1935 | Apparatus for Molding Insulators Machine for hot pressing porcelain box for street lights in one operation the interior surface with a rotating die and the exterior irregular surface with lugs with a stationary die (see 1,929,737) |
FISCHER, Eugene H. |
Manufacturing | Westinghouse Electric & Mfg. Co. |
| 1959 | ||||||
| U | 2,915,801 | December 8, 1959 | Apparatus for Forming Plastic Clay Bodies Mold and pressing operation to eliminate the need to plunge and trim a suspension disk |
HARRY, William R. |
Mold | McGraw-Edison Co. |
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