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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 = '29') AND (category.subclass = '894') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '29'; Subclass is '894';

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T / S Patent Date Description Patentee Category Assigned To
 1933
U 1,902,310 March 21, 1933 Method of Making Insulator Caps
Method of pressing out a malleable metal cap		 PLIMPTON, Bentley A.
 Manufacturing Locke Insulator Corp.

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