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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 = '183') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '425'; Subclass is '183';

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T / S Patent Date Description Patentee Category Assigned To
 1936
U 2,034,707 March 24, 1936 Apparatus for Making One-Piece Insulators
Machine to press out the form and trim the profile in large unipart insulators		 BENARD, Arthur G.
 Manufacturing Locke Insulator Corp.

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