| 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 = '325') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '264'; Subclass is '325';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1917 | ||||||
| U | 1,227,680 | May 29, 1917 | Method of Screw-Threading Articles Made of Horn Method of threading insulators made of animal horn (see 1,333,188) |
SEGRE, Mario |
Horn | |
| 1920 | ||||||
| U | 1,333,188 | March 9, 1920 | Manufacture of Hollow Articles from Horn Manufacture of insulators from animal horn (see 1,227,680) |
SEGRE, Mario |
Horn | |
| 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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