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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 = '411') AND (category.subclass = '531') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '411'; Subclass is '531';

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T / S Patent Date Description Patentee Category Assigned To
 1883
U 279,274 June 12, 1883 Binding Post
Knob with grooves to wrap line wire around		 PATTERSON, William R.
 Knob Western Electric Co.

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