Patents by Inventor Haruo Koguchi

Haruo Koguchi 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).

  • Phonograph
    Patent number: D250646
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: December 26, 1978
    Assignee: Nippon Columbia Co., Ltd.
    Inventors: Motohiro Hashimoto, Masahide Akiyama, Haruo Koguchi, Toshiharu Horikoshi, Tsutomu Sakuma