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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 = '248') AND (category.subclass = '544') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '248'; Subclass is '544';

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T / S Patent Date Description Patentee Category Assigned To
 1894
U 524,100 August 7, 1894 Supporting Insulator for Electric Wires
Pin		 BEARDSLEY, Lauren S.
 Pin  

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