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 = '52') AND (category.subclass = '651.02') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '52'; Subclass is '651.02';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1905 | ||||||
U | 800,935 | October 3, 1905 | Electric Wire Tower Steel tower composed of triangular structure |
NOYES, La Verne W. |
Tower | |
1930 | ||||||
U | 1,783,271 | December 2, 1930 | High Potential Installation Use of flux control arcing horns (see 1,552,664) to control flashover on towers using strings of suspension disks (see 1,783,272) |
AUSTIN, Arthur O. |
Transmission | The Ohio Brass Co. |
U | 1,783,272 | December 2, 1930 | Support for Transmission Lines Orientation of tower supporting transmission line using flux control arcing harms (see 1,783,271) |
AUSTIN, Arthur O. |
Transmission | The Ohio Brass Co. |
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