TREA

Douglas S. Gray

Follow

Person

  • Lancaster, PA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Ported slide gate valve with gate motion to break scale build up
    • Patent number 6,681,790
    • Issue date Jan 27, 2004
    • ITT Manufacturing Enterprises, Inc.
    • Bruce P. Knobbe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Trunnion type ball valve
    • Patent number 4,683,906
    • Issue date Aug 4, 1987
    • ITT Corporation
    • Ronald G. Butler
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents