Patents by Inventor Wong F. Keung

Wong F. Keung 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).

  • Hair setter
    Patent number: D300472
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: March 28, 1989
    Assignee: Motor Electric Manufacturing Co., Ltd.
    Inventor: Wong F. Keung
  • Flexible roller for hair setter
    Patent number: D302598
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: August 1, 1989
    Assignee: Motor Electric Mfg. Co., Ltd.
    Inventor: Wong F. Keung
  • Coffee pot warmer
    Patent number: D312747
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: December 11, 1990
    Assignee: Motor Electric Manufacturing Co. Ltd.
    Inventor: Wong F. Keung