TREA

Richard A. Roen

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  • Edmonton, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Arc welding apparatus with oscillating electrode
    • Patent number 4,295,031
    • Issue date Oct 13, 1981
    • The Research Council of Alberta
    • Richard A. Roen
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Oscillating arc welding
    • Patent number 4,177,373
    • Issue date Dec 4, 1979
    • The Research Council of Alberta
    • Richard A. Roen
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR