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Robert L. Johnston

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  • Greenville, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Quick connect fitting
    • Patent number 4,993,755
    • Issue date Feb 19, 1991
    • Master Industries, Inc.
    • Robert L. Johnston
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Quick connect fitting
    • Patent number 4,664,427
    • Issue date May 12, 1987
    • Master Industries, Inc.
    • Robert L. Johnston
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...