TREA

Michael L. Wagberg

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Disk/stem connection apparatus for butterfly valve
    • Patent number 4,682,758
    • Issue date Jul 28, 1987
    • Keystone International, Inc.
    • William B. Scobie
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fire-safe ventilation valve
    • Patent number 4,651,763
    • Issue date Mar 24, 1987
    • Keystone International, Inc.
    • William B. Scobie
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fireproof valve assembly and seal element for use therein
    • Patent number 4,649,949
    • Issue date Mar 17, 1987
    • Keystone International, Inc.
    • William B. Scobie
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fireproof valve assembly and valve element for use therein
    • Patent number 4,648,418
    • Issue date Mar 10, 1987
    • Keystone International, Inc.
    • William B. Scobie
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...