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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 = '72') AND (category.subclass = '349') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '72'; Subclass is '349';

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T / S Patent Date Description Patentee Category Assigned To
 1860
U 28,397 May 22, 1860 Improvement in Making Sheet Metal Caps & c.
Method of making screw caps		 NEWTON, Orrin
 HU  

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