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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 = '74') AND (category.subclass = '574') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '74'; Subclass is '574';

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T / S Patent Date Description Patentee Category Assigned To
 1892
U 474,319 May 3, 1892 Insulator
Strain type		 GOODRICH, Charles F.
 Strain 1/2 to John G. Thompson

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