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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 = '228') AND (category.subclass = '903') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '228'; Subclass is '903';

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T / S Patent Date Description Patentee Category Assigned To
U 2,198,578 April 30, 1940 Double Glazing
Double pane window glass with aluminum seal
HAZELTON, Benjamin F.
HOLMES, Minot K.
OI Owens-Illinois Glass Co.
U 2,264,152 November 25, 1941 Method of Forming a Metallic Surface on Ceramic Bodies
RFI metallic coating that strongly adheres to the insulator
ROWLAND, Davidge H.
RFI Locke Insulator Corp.
U 3,054,704 September 18, 1962 Insulator Assembly Method and Apparatus
Suspension, method of sealing cement to improve strength during curing
RUOFF, George M.
Suspension A. B. Chance Co.

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