| 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 = '313') AND (category.subclass = '323') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '313'; Subclass is '323';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1883 | ||||||
| U | 280,324 | June 26, 1883 | Combined Insulator and Lightning arrester Combined insulator and lightning arrestor |
NOBLE, John E. |
Lightning Arrestor | 1/6 to Charles J. Leming |
| 1914 | ||||||
| U | 1,099,421 | June 9, 1914 | High Voltage Switch High voltage switch mounted on multipart insulators composed of triangle shaped metal rods and insulators that rotate to open or close the switch. |
BURKE, Alfred Woodard |
Switch | |
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