TREA

John B. G. Hedberg

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  • Molnlycke, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Current unit for arc welding
    • Patent number 4,159,409
    • Issue date Jun 26, 1979
    • Thermal Dynamics Corporation
    • John B. G. Hedberg
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR