TREA

George W. Francis Jr.

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  • Saginaw, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Labyrinth seal for trolley wheels or the like
    • Patent number 4,154,447
    • Issue date May 15, 1979
    • Saginaw Products Corporation
    • George W. Francis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...