Yasuhiro Aoki

Person

  • Shizuoka, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Pen tip structure

    • Patent number 4,795,286
    • Issue date Jan 3, 1989
    • Teibow Co., Ltd.
    • Tetsuo Shimoishi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES