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Structural members modules
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Patent number 4,461,133
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Issue date Jul 24, 1984
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Francois X. Laroche
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Casement frame
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Patent number 4,333,295
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Issue date Jun 8, 1982
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HEF-Fenstertechnik Vetriebs GmbH
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Bernhard Janke
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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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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Window frame
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Patent number 4,037,378
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Issue date Jul 26, 1977
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Replacement Products Industries Corporation
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David R. Collins
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2981385
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Patent number 2,981,385
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Issue date Apr 25, 1961
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2877876
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Patent number 2,877,876
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Issue date Mar 17, 1959
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS