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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 = '470') AND (category.subclass = '18') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '470'; Subclass is '18';

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T / S Patent Date Description Patentee Category Assigned To
 1875
U 161,912 April 13, 1875 Improvement in Modes of Forming Sheet Metal Threaded Collars
Oil lamp collar		 TAPLIN, Alvin
 HU  

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