Patents by Inventor Seisho Yamaguchi

Seisho Yamaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Drawing compass
    Patent number: D246981
    Type: Grant
    Filed: January 9, 1976
    Date of Patent: January 17, 1978
    Assignee: Kabushiki Kaisha Uchida Yoko
    Inventors: Seisho Yamaguchi, Fujiro Nezu, Atsuko Kamoshida, Hidenoir Shimizu