| 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 = '248') AND (category.subclass = '274.1') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '248'; Subclass is '274.1';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1914 | ||||||
| U | 1,097,414 | May 19, 1914 | Adjustable Insulator Support Bracket, metal to fit around crossarm for two insulators |
FORT, Louis |
Bracket | |
| 1926 | ||||||
| U | 1,586,642 | June 1, 1926 | Insulator Pin Steel pin and bracket combination stamped out of sheet metal and bolted around the crossarm |
ARNDT, John P. |
Pin | |
| 1928 | ||||||
| U | 1,670,429 | May 22, 1928 | Pin for Insulators Steel pin and bracket combination stamped out of sheet metal and bolted around the crossarm |
ARNDT, John Philip |
Pin | |
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