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Composite fire-proof, heat-barrier door
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Patent number 5,916,077
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Issue date Jun 29, 1999
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Chuan Mau Products, Ltd.
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Jung-Chaun Tang
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Door hinge structure
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Patent number 5,689,855
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Issue date Nov 25, 1997
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Chuan Mau Products Co., Ltd.
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Jung-Chuan Tang
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES