Patents by Inventor Tetsuo Sugi

Tetsuo Sugi 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).

  • Electronic calculator
    Patent number: D306311
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: February 27, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuo Sugi, Kazuyoshi Kojima
  • Telephone
    Patent number: D319641
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: September 3, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuo Sugi, Fumiharu Ota, Satoshi Yonai