Toshiharu Watanabe

Person

  • Sakai, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Rolling bearing

    • Patent number 6,547,442
    • Issue date Apr 15, 2003
    • Koyo Seiko Co., Ltd.
    • Toshiharu Watanabe
    • C21 - METALLURGY OF IRON