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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 = '428') AND (category.subclass = '410') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '428'; Subclass is '410';

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T / S Patent Date Description Patentee Category Assigned To
 1988
U 4,757,162 July 12, 1988 Rigid Electrical Insulator Including a Lightly Tempered Soda-Lime Glass Dielectric
Glass insulator with controlled stress and compression		 DUMORA, Denis
PARANT, Jean-Paul
PARGAMIN, Laurent
 Glass Ceraver

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