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 = '135') AND (category.subclass = '114') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '135'; Subclass is '114';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1892 | ||||||
U | 470,514 | March 8, 1892 | Lightning Conductor Hollow conductor rod with slip fittings |
SIMPSON, Harvey |
Lightning Rod |
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