TREA

William L. Zemke

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  • Forest Lake, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Window latch
    • Patent number 5,769,469
    • Issue date Jun 23, 1998
    • William L. Zemke
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sash lock
    • Patent number 5,582,445
    • Issue date Dec 10, 1996
    • Andersen Corporation
    • Carl J. Olsen
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sash lock
    • Patent number D350275
    • Issue date Sep 6, 1994
    • Andersen Corporation
    • Carl J. Olsen
    • D08 - Tools and hardware