SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '446') AND (category.subclass = '400') ORDER BY last_name ASC, first_name, date, patent, type |
Total of 1 patents found where: Class is '446'; Subclass is '400';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
SPRATT, James | ||||||
U | 7,008 | January 8, 1850 | Improvement in Alloys for Points of Lightning Rods Alloy composed of tin, antimony, bismuth, silver, platinum, and silex |
SPRATT, James |
Lightning Rod Point |
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