Patents by Inventor Tatsumi Keizo

Tatsumi Keizo 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).

  • Body of electric stringed instrument
    Patent number: D664188
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: July 24, 2012
    Assignee: Yamaha Corporation
    Inventor: Tatsumi Keizo