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John G. MacLeod

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  • Allison Park, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary valve with stem seal means
    • Patent number 4,174,092
    • Issue date Nov 13, 1979
    • Rockwell International Corporation
    • John G. Macleod
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Balanced plug valve
    • Patent number 4,135,544
    • Issue date Jan 23, 1979
    • Rockwell International Corporation
    • John G. MacLeod
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...