TREA

Larry F. Koll

Follow

Person

  • Reno, NV, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Line blind valve
    • Patent number 5,370,149
    • Issue date Dec 6, 1994
    • The Clarkson Company
    • Curtis W. Clarkson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve
    • Patent number 5,271,426
    • Issue date Dec 21, 1993
    • The Clarkson Company
    • Curtis W. Clarkson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve with lock ring
    • Patent number 4,846,442
    • Issue date Jul 11, 1989
    • The Clarkson Company
    • Curtis W. Clarkson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve
    • Patent number 4,688,597
    • Issue date Aug 25, 1987
    • The Clarkson Company
    • Curtis W. Clarkson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...