Patents by Inventor Keiji Ohshima

Keiji Ohshima 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).

  • Astronomical telescope
    Patent number: D333669
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: March 2, 1993
    Assignee: Dai-Ichi Kogaku Co., Ltd.
    Inventor: Keiji Ohshima