TREA

Fred L. Hostetler

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  • Hillsboro, OR, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Failsafe interlock switch
    • Patent number 5,239,202
    • Issue date Aug 24, 1993
    • Sentrol, Inc.
    • Fred L. Hostetler
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...