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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 = '403') AND (category.subclass = '311') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '403'; Subclass is '311';

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T / S Patent Date Description Patentee Category Assigned To
 1889
U 395,399 January 1, 1889 Lightning Rod
Coupling for four-pointed lightning rods		 MAST, Louis L.
 Lightning Rod Coupling  

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