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Method of making a thermal barrier shape
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Patent number 4,079,496
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Issue date Mar 21, 1978
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Capitol Products Corporation
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Dietrich F. Schmidt
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3289377
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Patent number 3,289,377
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Issue date Dec 6, 1966
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3099337
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Patent number 3,099,337
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Issue date Jul 30, 1963
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3024881
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Patent number 3,024,881
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Issue date Mar 13, 1962
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2877515
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Patent number 2,877,515
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Issue date Mar 17, 1959
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2872713
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Patent number 2,872,713
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Issue date Feb 10, 1959
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS