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Wall construction
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Patent number 4,141,188
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Issue date Feb 27, 1979
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Kawneer Company, Inc.
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Ronald D. Sukolics
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Skylight system
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Patent number 4,114,330
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Issue date Sep 19, 1978
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Kawneer Company, Inc.
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Ronald D. Sukolics
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E04 - BUILDING
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Wall construction
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Patent number 4,030,260
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Issue date Jun 21, 1977
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Kawneer Company, Inc.
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Ronald D. Sukolics
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E04 - BUILDING