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Window frame assembly
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Patent number 4,370,828
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Issue date Feb 1, 1983
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Carl F. Miro
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Window frame assembly
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Patent number 4,246,731
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Issue date Jan 27, 1981
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Carl F. Miro
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS