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Bob R. Roberts

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  • Marshalltown, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Curtain valve
    • Patent number 3,951,168
    • Issue date Apr 20, 1976
    • Fisher Controls Company, Inc.
    • Bob R. Roberts
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...