TREA

Walter W. Svendsen

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  • New Brighton, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rod break-out and make-up tool
    • Patent number 4,309,922
    • Issue date Jan 12, 1982
    • Longyear Company
    • Gary H. Beckley
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    High-low speed rotary drive mechanism
    • Patent number 4,266,444
    • Issue date May 12, 1981
    • Longyear Company
    • Ronald B. Anderson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Dry hole wire core barrel apparatus
    • Patent number 3,930,679
    • Issue date Jan 6, 1976
    • Longyear Company
    • Ronald B. Anderson
    • E21 - EARTH DRILLING MINING