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William B. Mraz

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  • Epping, NH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    On-site fillable liquid magnetic seal
    • Patent number 5,806,856
    • Issue date Sep 15, 1998
    • Ferrofluidics Corporation
    • Thomas J. Black
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ferrofluidic seal centering ring
    • Patent number 5,593,164
    • Issue date Jan 14, 1997
    • Ferrofluidics Corporation
    • William B. Mraz
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    On-site fillable ferrofluidic seal
    • Patent number 5,560,620
    • Issue date Oct 1, 1996
    • Ferrofluidics Corporation
    • Thomas J. Black
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    On-site fillable ferrofluidic seal
    • Patent number 5,474,302
    • Issue date Dec 12, 1995
    • Ferrofluidics Corporation
    • Thomas J. Black
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...