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Larry Donald Hartman

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  • Kalamazoo, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Modular manifold for a tankless water heater
    • Patent number 11,499,746
    • Issue date Nov 15, 2022
    • Bradford-White Corporation
    • Kenneth E. Lutz
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Connection assembly
    • Patent number 9,964,241
    • Issue date May 8, 2018
    • Keltech, Inc.
    • Ken Lutz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Modular manifold for a tankless water heater
    • Patent number 9,574,792
    • Issue date Feb 21, 2017
    • Keltech, Inc.
    • Kenneth E. Lutz
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    On-demand water heating system
    • Patent number 8,787,742
    • Issue date Jul 22, 2014
    • Keltech, Inc.
    • Kenneth E. Lutz
    • F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

  • Information Patent Application

    MODULAR MANIFOLD FOR A TANKLESS WATER HEATER
    • Publication number 20170159969
    • Publication date Jun 8, 2017
    • Keltech, Inc.
    • Kenneth E. Lutz
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    CONNECTION ASSEMBLY
    • Publication number 20140361535
    • Publication date Dec 11, 2014
    • Ken Lutz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    On-Demand Water Heating System
    • Publication number 20130034344
    • Publication date Feb 7, 2013
    • Keltech, Inc.
    • Kenneth E. Lutz
    • F24 - HEATING RANGES VENTILATING