Patents Assigned to Dialfone, Ltd.
  • Telephone set
    Patent number: D306442
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: March 6, 1990
    Assignee: Dialfone, Ltd.
    Inventor: William Chung
  • Telephone
    Patent number: D347633
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: June 7, 1994
    Assignee: Dialfone, Ltd.
    Inventor: Chan W. Keung
  • Telephone
    Patent number: D350131
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: August 30, 1994
    Assignee: Dialfone, Ltd.
    Inventor: Chan Wai Keung