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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 = '439') AND (category.subclass = '870') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '439'; Subclass is '870';

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T / S Patent Date Description Patentee Category Assigned To
 1952
U 2,610,390 September 16, 1952 Method of Making Electrical Terminals
Method of making terminals for manufacture of televisions		 LOCKE, Louis P.
 Television  

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