Patents by Inventor Ching-Feng Hwang

Ching-Feng Hwang 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).

  • Hanging telephone set with message box
    Patent number: D325731
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: April 28, 1992
    Inventor: Ching-Feng Hwang
  • Telephone set
    Patent number: D340713
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: October 26, 1993
    Inventor: Ching-Feng Hwang