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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 = '215') AND (category.subclass = '354') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '215'; Subclass is '354';

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T / S Patent Date Description Patentee Category Assigned To
U 15,491 August 5, 1856 Improvement in Lightning Rods
Lightning rod made of tubular metal with fins
Lightning Rod  

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