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 = '343') AND (category.subclass = '899') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '343'; Subclass is '899';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1889 | ||||||
U | 414,943 | November 12, 1889 | Method of Utilizing Natural Electric Energy Method of capturing electric energy from lightning rods and storing in a battery |
DEWEY, Mark W. |
Lightning Energy | The Dewey Corp. |
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