John E. De Veau

Person

  • Minnetonka, MN, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Aeration propeller and apparatus

    • Patent number 4,240,990
    • Issue date Dec 23, 1980
    • Aeration Industries, Inc.
    • Harold G. Inhofer
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE