| 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 = '222.12') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '248'; Subclass is '222.12';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1907 | ||||||
| U | 851,577 | April 23, 1907 | Cross Arm Pin Steel pin with clips at the bottom to secure the pin and ribs at the top to prevent turning |
WEAVER, David |
Pin | |
| 1909 | ||||||
| U | 910,799 | January 26, 1909 | Insulator Pin Pin (metal) split & bent on each end to hold thimble on pin & pin in crossarm |
EDMISTON, Samuel J. |
Pin | |
| 1925 | ||||||
| U | 1,528,580 | March 3, 1925 | Insulator Pin Unique hollow steel pin with bottom halves that widen when the insulator is screwed down on the pin thus gripping the hole in the crossarm and securing the pin and allowing a tap wire to run from the line conductor down through the center of the pin |
STAUB, Arthur J. |
Pin | |
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