Separate Delinting And Doffing Chambers Patents (Class 19/42)
Roller and bar (Class 19/43)
  • Ball-point pen
    Patent number: D342277
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: December 14, 1993
    Assignee: Yoshinaga Corporation
    Inventors: Shigeo Yoshinaga, Tatsuo Ikegami, Seiji Osaki