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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 = '141') AND (category.subclass = '352') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '141'; Subclass is '352';

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T / S Patent Date Description Patentee Category Assigned To
 1917
U 1,246,879 November 20, 1917 Valve
Kerosene jar valve		 CHADWICK, Lee S.
 HU The Cleveland Metal Products Co.

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