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Vertical siding system
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Patent number 4,228,629
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Issue date Oct 21, 1980
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Alcan Aluminum Corporation
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Alexander A. Chalmers
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E04 - BUILDING
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Adjustable soffit system
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Patent number 4,195,455
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Issue date Apr 1, 1980
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Alcan Aluminum Corporation
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Alexander A. Chalmers
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E04 - BUILDING
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Window casing cover
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Patent number 4,193,238
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Issue date Mar 18, 1980
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Alcan Aluminum Corporation
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Alexander A. Chalmers
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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