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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 = '285') AND (category.subclass = '403') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '285'; Subclass is '403';

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T / S Patent Date Description Patentee Category Assigned To
 1872
U 123,958 February 20, 1872 Improvement in Lightning Rods
Lightning rod made of sheet metal crimped multiple times and curved to a circle to form a hollow rod with multiple deep flutes		 WELSH, Dwight F.
 Lightning Rod  

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