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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 = '220') AND (category.subclass = '304') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '220'; Subclass is '304';

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T / S Patent Date Description Patentee Category Assigned To
 1854
U 11,332 July 18, 1854 Improvement in Hermetical Sealing
Metal can with rubber gasket (see reissue 1,593)		 SPRATT, James
 Can  

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