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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 = '49') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '65'; Subclass is '49';

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T / S Patent Date Description Patentee Category Assigned To
 1930
U 1,780,246 November 4, 1930 Glass Insulator and Method of Making Same
Suspension glass Hewlett design with embedded/loose fitting metal brackets		 ROWLAND, Davidge H.
 Suspension Locke Insulator Corp.
 1937
U Specimen known 2,089,791 August 10, 1937 Method of Making Electrical Insulators
CD 240.2, method of making insulator described in 2,191,152		 HAMMEL, Victor F.
 Insulator  
 1940
U 2,196,109 April 2, 1940 Hollow Glass Building Block
Blocks with wire glass		 EASTUS, Harold L.
 OI Owens-Illinois Glass Co.

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