Chester A. Siver

Person

  • Suffield, CT, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Ball valve with improved valve seat and bonnet assembly

    • Patent number 5,799,928
    • Issue date Sep 1, 1998
    • Conval Inc.
    • Chester A. Siver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hemispherical ball valve

    • Patent number 5,531,244
    • Issue date Jul 2, 1996
    • Conval, Inc.
    • Chester A. Siver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Half-turn valve

    • Patent number 4,597,560
    • Issue date Jul 1, 1986
    • Conval, Inc.
    • Chester A. Siver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve with yoke and captive gland wrench

    • Patent number 4,351,512
    • Issue date Sep 28, 1982
    • Chester A. Siver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...