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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 = '52') AND (category.subclass = '477') ORDER BY date ASC, patent, type

Total of 5 patents found where: Class is '52'; Subclass is '477';

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T / S Patent Date Description Patentee Category Assigned To
U 2,198,450 April 23, 1940 Light Transmitting Structure
Skylight construction using glass blocks
U 2,318,362 May 4, 1943 Wall Construction
Glass Block wall construction without mortar
BOEGLEN, Durwood L.
LOCKART, Edward P.
OI Owens-Illinois Glass Co.
U 2,812,691 November 12, 1957 Skylights
Skylight utilizing glass block
BOYD, Robert A.
OI Owens-Illinois Glass Co.
U 2,996,845 August 22, 1961 Structural Panel and Building Wall Construction Utilizing Same
Panellized glass block wall construction
CIPRIANI, Chester C.
STARK, Charles H.
KI Kimble Glass Co.
U 3,012,378 December 12, 1961 Light Transmitting Blocks
Glass Block
BOYD, Robert A.
OI Owens-Illinois Glass Co.

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