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 = '428') AND (category.subclass = '583') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '428'; Subclass is '583';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1858 | ||||||
U | 19,819 | March 30, 1858 | Improvement in Lightning Conductors Lightning rod made of iron wires wrapped with copper sheets |
WHITE, Oren |
Lightning Rod | Henry C. Janes |
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