Building units and construction elements – Architectural stock material – Extruded shape
Patent
1990-08-31
1992-12-01
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
D25103
Patent
active
D03314693
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"PC Glass Block, Panels, Walls, Windows, Exterior and Interior Applications" by Pittsburgh Corning Corporation, Dec. 1983.
"Glass Block" by Pittsburgh Corning Corporation, Mar. 1978.
Clark Doris
Pittsburgh Corning Corporation
Price, Jr. Stanley
Word A. Hugo
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