| 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 = '309') ORDER BY description DESC, date, patent, type |
Total of 2 patents found where: Class is '313'; Subclass is '309';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1908 | ||||||
| U | 883,303 | March 31, 1908 | Security Lightning Arrester Lightning rod with multiple separate points arranged along the conductor on the edges of the roof |
DRAKE, William E. |
Lightning Rod Point | |
| 1882 | ||||||
| U | 262,210 | August 8, 1882 | Combined Insulator, Lightning arrester, and Connector Combined insulator, lightning arrestor and connector |
ECKERT, William ECKERT, Edward SEELY, John |
Lightning Arrestor | |
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