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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 = '408') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '425'; Subclass is '408';

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T / S Patent Date Description Patentee Category Assigned To
 1935
U 2,007,567 July 9, 1935 Apparatus for Molding Insulators
Machine for hot pressing porcelain box for street lights in one operation the interior surface with a rotating die and the exterior irregular surface with lugs with a stationary die (see 1,929,737)		 FISCHER, Eugene H.
 Manufacturing Westinghouse Electric & Mfg. Co.

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