David M. Hoffman

Person

  • Harmony, PA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Solid flight conveying screw for furnace

    • Patent number 5,863,197
    • Issue date Jan 26, 1999
    • The International Metals Reclamation Company, Inc.
    • William A. Boy
    • F28 - HEAT EXCHANGE IN GENERAL