John P. Ruffell

Person

  • Beverly Farms, MA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for ion implantation

    • Patent number 5,053,627
    • Issue date Oct 1, 1991
    • Ibis Technology Corporation
    • John P. Ruffell
    • H01 - BASIC ELECTRIC ELEMENTS