John B. Duquette

Person

  • Concord, NH, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid consistency regulating pump

    • Patent number 4,865,067
    • Issue date Sep 12, 1989
    • Crathern Engineering Co., Inc.
    • John B. Duquette
    • G05 - CONTROLLING REGULATING