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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 = '606') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '220'; Subclass is '606';

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T / S Patent Date Description Patentee Category Assigned To
 1875
U 167,608 September 14, 1875 Improvement in the Manufacture of Glassware
Lamp foot made by pushing up bottom		 GILL, James C.
 Lamp John Adams & Co.

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