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Douglas L. Lumbra

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  • St. Albans, VT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air mixer cool plate
    • Patent number 5,508,883
    • Issue date Apr 16, 1996
    • International Business Machines Corporation
    • Douglas L. Lumbra
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Welded wire cooling
    • Patent number 4,714,953
    • Issue date Dec 22, 1987
    • International Business Machines Corporation
    • Marvin L. Buller
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Percussive arc welding
    • Patent number 4,417,120
    • Issue date Nov 22, 1983
    • International Business Machines Corporation
    • Douglas L. Lumbra
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR