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Schuco Heinz Schumann GmbH & Co.
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Bielefeld, DE
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Patent Grant
Heat-insulated window casement and frame construction
Patent number
4,581,852
Issue date
Apr 15, 1986
Schuco Heinz Schumann GmbH & Co.
Tilo Jager
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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