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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 = '403') AND (category.subclass = '312') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '403'; Subclass is '312';

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T / S Patent Date Description Patentee Category Assigned To
 1924
U 1,508,158 September 9, 1924 Coupling for Insulators
Links to connect Hewlett suspension disks		 BOWER, George W.
 Suspension General Electric Co.

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