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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 = '306') ORDER BY date ASC, patent, type

Total of 12 patents found where: Class is '52'; Subclass is '306';

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T / S Patent Date Description Patentee Category Assigned To
 1934
U 1,949,898 March 6, 1934 Building Block
Various forms of glass window block		 COCHRANE, Samuel S.
KADOW, August
 OI Owens-Illinois Glass Co.
 1935
U 1,989,634 January 29, 1935 Glass Tile and Building Block
Blocks and tiles made with colored surfaces		 COLLINS, Howard W.
RUIZ, Eloy
 OI Owens-Illinois Glass Co.
U 1,991,469 February 19, 1935 Building Block
Block with interior partition, separate lid		 SLAYTER, Games
 OI Owens-Illinois Glass Co.
 1938
U 2,114,732 April 19, 1938 Building Block
Blocks with corrugated edges		 ANDEREGG, Frederick O.
 OI Owens-Illinois Glass Co.
U 2,115,513 April 26, 1938 Wall Construction
Blocks with sanded edges		 BAUER, John E.
 OI Owens-Illinois Glass Co.
D 112,746 December 27, 1938 Design for a Hollow Glass Building Block
Block design with wave design		 TEAGUE, Walter D.
 OI Owens-Illinois Glass Co.
 1939
U 2,170,602 August 22, 1939 Method of Producing Glass Building Blocks
Bonding agent applied to mortar bearing block sides		 BAUER, John E.
 OI Owens-Illinois Glass Co.
 1950
U 2,532,478 December 5, 1950 Building Block
Multiple celled glass block		 BRIDGES, Donald A.
 OI Owens-Illinois Glass Co.
 1956
U 2,768,556 October 30, 1956 Control of Daylighting
Window design uitilizing glass blocks		 BOYD, Robert A.
 OI Owens-Illinois Glass Co.
 1958
U 2,844,998 July 29, 1958 Glass Building Block Having Light Directing Properties
Glass block that directs light		 VINCENT, Harvard B.
 OI Owens-Illinois Glass Co.
 1961
U 2,993,409 July 25, 1961 Skylights
Glass Block Skylight		 BOYD, Robert A.
 OI Owens-Illinois Glass Co.
 1964
U 3,122,861 March 3, 1964 Field Replacement Block in Masonry Walls and Panels
Field Replacement of Glass Blocks		 IDEN, Charles H.
 OI Owens-Illinois Glass Co.

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