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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 = '264') AND (category.subclass = '334') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '264'; Subclass is '334';

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T / S Patent Date Description Patentee Category Assigned To
 1916
U 1,170,287 February 1, 1916 Method of Making Insulators
Suspension cementing method (high temp and humidity)		 LAPP, John S.
 Suspension Locke Insulator Mfg. Co.
 1937
U 2,068,941 January 26, 1937 Process and Apparatus for Manufacturing Insulators
Plunger to first form the pinhole in a porcelain insulator by first plunging a pinhole without threads then form the threads		 BOVARD, Floyd G.
 Press The Ohio Brass Co.

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