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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 = '425') AND (category.subclass = '306') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '425'; Subclass is '306';

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T / S Patent Date Description Patentee Category Assigned To
 1931
U 1,808,105 June 2, 1931 Insulator Cutter and Method of Treating Insulators
Manufacturing method to cut out the top and bottom recess of a Hewlett suspension disk and ready for cutting the holes for link passages		 GOUVERNEUR, Minor F. H.
 Manufacturing Locke Insulator Corp.
 1946
U 2,393,549 January 22, 1946 Press Molding Machine
Press for glass land mine production		 MCCREERY, Cecil Wayne
 OI Owens-Illinois Glass Co.

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