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Curtain wall gasket
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Patent number 3,974,613
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Issue date Aug 17, 1976
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Homer C. Criswell
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Glazing panel support system
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Patent number 3,938,291
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Issue date Feb 17, 1976
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Homer C. Criswell
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS