Patents by Inventor Wong L. Ling

Wong L. Ling 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).

  • Pedometer
    Patent number: D303094
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: August 29, 1989
    Assignee: Innovative Time Corporation
    Inventor: Wong L. Ling
  • Round analog clock
    Patent number: D359241
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: June 13, 1995
    Assignee: Ballanda Limited
    Inventor: Wong L. Ling
  • Travelling clock
    Patent number: D359695
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: June 27, 1995
    Assignee: Ballanda Limited
    Inventor: Wong L. Ling