Patents by Inventor Tsun H. Yeh

Tsun H. Yeh 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).

  • Video cassette rewinder
    Patent number: D317309
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: June 4, 1991
    Inventor: Tsun H. Yeh
  • Video cassette rewinder
    Patent number: D319244
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: August 20, 1991
    Assignee: Chwen Ho Chuang Co., Ltd.
    Inventor: Tsun H. Yeh
  • Video cassette rewinder
    Patent number: D322073
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: December 3, 1991
    Assignee: Chwen Ho Chuang Co., Ltd.
    Inventor: Tsun H. Yeh
  • Video cassette rewinder
    Patent number: D330203
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: October 13, 1992
    Inventor: Tsun H. Yeh
  • Video cassette rewinder
    Patent number: D337117
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: July 6, 1993
    Inventor: Tsun H. Yeh