Howard K. Johnson

Person

  • Webster, NY, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Fluids mixing apparatus

    • Patent number 4,231,974
    • Issue date Nov 4, 1980
    • General Signal Corporation
    • Horst P. Engelbrecht
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE