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Fire door assembly
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Patent number 4,467,562
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Issue date Aug 28, 1984
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American Metal Door Company, Inc.
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Gene A. Hemmerling
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Pass door assembly
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Patent number 4,461,120
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Issue date Jul 24, 1984
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American Metal Door Company, Inc.
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Gene A. Hemmerling
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS