Making square or polygonal holes in work-pieces

Industry

  • CPC
  • B23C3/26
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary milling cutter and milling method using the same technical f...

    • Patent number 7,306,412
    • Issue date Dec 11, 2007
    • Shinjo Metal Industries, Ltd.
    • Keizo Masuyama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Eccentric boring tool and method

    • Patent number 4,260,306
    • Issue date Apr 7, 1981
    • C. L. Frost & Son, Inc.
    • Siegfried K. Weis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Internal and external cutting tool

    • Patent number 3,978,765
    • Issue date Sep 7, 1976
    • John R. Scaduto
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3908510

    • Patent number 3,908,510
    • Issue date Sep 30, 1975
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents