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 = '52') AND (category.subclass = '651.11') ORDER BY category DESC, date, patent, type |
Total of 1 patents found where: Class is '52'; Subclass is '651.11';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
Lightning Rod | ||||||
U | 433,459 | August 5, 1890 | Lightning Rod Tower Lightning rod tower used to protect a group of houses or buildings |
FERRELL, Isaac M. |
Lightning Rod |
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