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William V. Gurzenda

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  • Rockwood, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Door hardware protection device
    • Patent number 5,934,023
    • Issue date Aug 10, 1999
    • Rockwood Manufacturing Company
    • William Gurzenda
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Panic bar protection device
    • Patent number 5,867,941
    • Issue date Feb 9, 1999
    • William Gurzenda
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Door bumper
    • Patent number 3,994,043
    • Issue date Nov 30, 1976
    • Rockwood Manufacturing Company
    • William V. Gurzenda
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES