TREA

Ryoei Hasegawa

Follow

Person

  • Tokyo, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary cutting tool
    • Patent number 5,090,849
    • Issue date Feb 25, 1992
    • Mitsubishi Materials Corporation
    • Tatsuo Arai
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Rotary cutting tool
    • Patent number 5,026,221
    • Issue date Jun 25, 1991
    • Mitsubishi Metal Corporation
    • Tatsuo Arai
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR