| 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 = '446') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '446';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1850 | ||||||
| U | 7,008 | January 8, 1850 | Improvement in Alloys for Points of Lightning Rods Alloy composed of tin, antimony, bismuth, silver, platinum, and silex |
SPRATT, James |
Lightning Rod Point | |
| 1876 | ||||||
| U | 174,866 | March 14, 1876 | Improvement in Weather Vane Attachments for Lightning Rods Lightning rod top cap for holding weather vanes (shows a rooster) |
SMITH, Charles H. |
Lightning Rod Point | |
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