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Rigidified doorway
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Patent number 4,512,124
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Issue date Apr 23, 1985
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Peachtree Doors, Inc.
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Dennis W. Banford
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Doorway structure
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Patent number 4,502,249
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Issue date Mar 5, 1985
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Peachtree Doors, Inc.
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Dennis W. Banford
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES