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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 = '174') AND (category.subclass = '84R') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '174'; Subclass is '84R';

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T / S Patent Date Description Patentee Category Assigned To
 1883
U 270,379 January 9, 1883 Lightning Rod
Lightning rod made of hollow copper filled with non-metallic material and special connectors on each end
BRANDON, John H.
Lightning Rod  

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