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Donald R. Nelson

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  • Worcester, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve for cryogenic fluid
    • Patent number 6,341,624
    • Issue date Jan 29, 2002
    • Goddard Valve Corporation
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bottom entry cryogenic valve
    • Patent number 6,167,902
    • Issue date Jan 2, 2001
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve for cryogenic fluid
    • Patent number 5,934,327
    • Issue date Aug 10, 1999
    • Goddard Valve Corporation
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Top entry valve
    • Patent number 5,013,009
    • Issue date May 7, 1991
    • Goddard Valve Corporation
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve construction
    • Patent number 4,911,202
    • Issue date Mar 27, 1990
    • Goddard Industries, Inc.
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve
    • Patent number 4,844,411
    • Issue date Jul 4, 1989
    • Goddard Industries, Inc.
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Mixing valve
    • Patent number 4,182,372
    • Issue date Jan 8, 1980
    • Goddard Industries, Inc.
    • Hartley F. Grandin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Poppet valve
    • Publication number 20030015240
    • Publication date Jan 23, 2003
    • Donald R. Nelson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...