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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '451') AND (category.subclass = '388') ORDER BY last_name ASC, first_name, date, patent, type

Total of 1 patents found where: Class is '451'; Subclass is '388';

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T / S Patent Date Description Patentee Category Assigned To
 SKIPPER, Edward M.
U 2,355,684 August 15, 1944 Insulator Cutting Machine
Machine to automatically trim the profile in insulators in an assembly line process
SKIPPER, Edward M.
Machine Locke Insulator Corp.

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