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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 = '454') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '428'; Subclass is '454';

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T / S Patent Date Description Patentee Category Assigned To
 1942
U 2,281,173 April 28, 1942 Insulator and Method of Producing Conducting Coating Thereon
RFI prevention using an inexpensive glaze coating
SANTOMIERI, Sebastian L.
RFI Victor Insulators, Inc.
 1945
U 2,389,386 November 20, 1945 Glazed Ceramic
Compression glaze
RUSSELL, JR., Ralston
Glaze Westinghouse Electric Corp.
 1948
U 2,434,555 January 13, 1948 Electrical Insulator
Method of soldering metal fittings on porcelain bushings made of ""Prestite"".
FISCHER, Eugene H.
HARNISH, John D.
RUSSELL, JR., Ralston
Manufacturing Westhinghouse Electric Corp.

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