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Integral astragal
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Patent number 5,675,947
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Issue date Oct 14, 1997
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Materiaux de Construction 2 Plus 2 Inc.
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Barry Yane
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Modular anti-warping door structure
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Patent number 5,557,899
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Issue date Sep 24, 1996
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Materiaux de Construction 2 Plus 2 Inc.
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Pierre Dube
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS