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Robert B. Gruener, Sr.

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  • Mishawaka, IN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ball valve with interlocking stem
    • Patent number 7,506,665
    • Issue date Mar 24, 2009
    • NIBCO Inc.
    • Robert B. Gruener, Sr.
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ball valve with snap-in stem
    • Patent number 7,306,010
    • Issue date Dec 11, 2007
    • NIBCO Inc.
    • Robert B. Gruener, Sr.
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...