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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 = '409') AND (category.subclass = '211') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '409'; Subclass is '211';

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T / S Patent Date Description Patentee Category Assigned To
 1912
U 1,022,874 April 9, 1912 Machine for Drilling Porcelain
Machine for drilling U-shaped holes in Hewlett suspension disk		 RIDDELL, John
 Suspension General Electric Co.

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