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Leif Karlsson

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  • Karlholmsbruk, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vibration-dampened tool for working in metallic material
    • Patent number 6,929,431
    • Issue date Aug 16, 2005
    • Sandvik AB
    • Marie-Louie Bergholt
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Vibration dampened drilling tool
    • Patent number 6,916,138
    • Issue date Jul 12, 2005
    • Sandvik Aktiebolag
    • Marie-Louise Bergholt
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Spiral drill with coolant channels and method to manufacture a spir...
    • Patent number 5,634,747
    • Issue date Jun 3, 1997
    • Sandvik AB
    • Tommy Tukala
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Spiral drill
    • Patent number 5,429,458
    • Issue date Jul 4, 1995
    • Sandvik AB
    • Tommy Tukala
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Drill
    • Patent number 4,889,455
    • Issue date Dec 26, 1989
    • Sandvik AB
    • Kurt O. Karlsson
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Drill and cutting insert therefor
    • Patent number 4,648,760
    • Issue date Mar 10, 1987
    • Santrade Limited
    • Kurt O. Karlsson
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents