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Otto G. G. Sprekeler

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  • Tarragindi, AU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Security screen door lock
    • Patent number 4,286,812
    • Issue date Sep 1, 1981
    • Whitco Pty. Ltd.
    • Otto G. G. Sprekeler
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES