TREA

Howard J. McElroy

Follow

Person

  • Cedar Rapids, IA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Duct joining system
    • Patent number 5,165,730
    • Issue date Nov 24, 1992
    • Howard J. McElroy
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Duct joining system
    • Patent number 5,069,484
    • Issue date Dec 3, 1991
    • Met-Coil Systems Corporation
    • Howard J. McElroy
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Duct connecting system
    • Patent number 4,466,641
    • Issue date Aug 21, 1984
    • The Lockformer Company
    • Robert R. Heilman
    • F24 - HEATING RANGES VENTILATING