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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 = '327') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '264'; Subclass is '327';

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T / S Patent Date Description Patentee Category Assigned To
U 2,039,500 May 5, 1936 Process of Assembling Insulators
Method of assembling a multipart insulators with cemented metal pins and caps to reduce strain from cement expansion (see 1,997,439)
Multipart The Ohio Brass Co.

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