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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 = '65') AND (category.subclass = '275') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '65'; Subclass is '275';

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T / S Patent Date Description Patentee Category Assigned To
 1952
U 2,602,269 July 8, 1952 Apparatus for Forming Undercut Sockets in a Material in a Hot Plastic State
Insulator press		 WILCOCK, John Edward
 Press Pilkington Brothers Ltd.

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