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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 = '154') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '264'; Subclass is '154';

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T / S Patent Date Description Patentee Category Assigned To
 1929
U 1,697,423 January 1, 1929 Method and Device for Cutting Holes in Insulators
Manufacturing method of cutting holes in Hewlett type suspension disks for links		 GOUVERNEUR, Minor F. H.
 Manufacturing Locke Insulator Corp.

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