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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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2927353
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Patent number 2,927,353
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Issue date Mar 8, 1960
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2248777
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Patent number 2,248,777
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Issue date Jul 8, 1941
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1427282
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Patent number 1,427,282
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Issue date Aug 29, 1922
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1402874
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Patent number 1,402,874
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Issue date Jan 10, 1922
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1395766
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Patent number 1,395,766
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Issue date Nov 1, 1921
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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513247
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Patent number 513,247
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Issue date Jan 23, 1894
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS