SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Lightning Rod Ground') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Category is 'Lightning Rod Ground';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1869 | ||||||
U | 97,496 | December 7, 1869 | Improvement in Lightning Rods and Conductors Grounding tip for lightning rod that retains water to improve conduction to ground |
GARLICK, Theodotus |
Lightning Rod Ground | |
1887 | ||||||
U | 362,062 | May 3, 1887 | Multiple Subsidiary Ground Terminal for Lightning Rods Lightning rod ground with multiple ground wire to spread current into ground |
COLE, James W. |
Lightning Rod Ground |
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