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HEF-Fenstertechnik Vetriebs GmbH

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    Casement frame
    • Patent number 4,333,295
    • Issue date Jun 8, 1982
    • HEF-Fenstertechnik Vetriebs GmbH
    • Bernhard Janke
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

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