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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 = '157') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '264'; Subclass is '157';

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T / S Patent Date Description Patentee Category Assigned To
 1975
U 3,923,570 December 2, 1975 Manufacture of Insulators
Method of cementing suspension insulators using thick cement and high intensity vibrations		 WILLEM, Michel
 Suspension Societe Europeene d'Isolateurs en Verre (SEDIVER)

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