Patents by Inventor Chung S. Leung

Chung S. Leung 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).

  • Fluorescent lantern
    Patent number: D250217
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: November 7, 1978
    Assignee: Foster Industries Co. Limited
    Inventor: Chung S. Leung
  • Inspection lamp for automobiles
    Patent number: D258539
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: March 10, 1981
    Assignee: Foster Industries Co., Ltd.
    Inventor: Chung S. Leung
  • Traffic bollard
    Patent number: D263454
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: March 23, 1982
    Assignee: Foster Industries Co., Limited
    Inventor: Chung S. Leung
  • Vehicle battery condition indicator
    Patent number: D264563
    Type: Grant
    Filed: April 29, 1980
    Date of Patent: May 25, 1982
    Assignee: Foster Industries Co., Ltd.
    Inventor: Chung S. Leung
  • Portable lantern
    Patent number: D267514
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: January 4, 1983
    Assignee: Foster Industries Co., Limited
    Inventor: Chung S. Leung
  • Multi-function portable lantern
    Patent number: D276851
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: December 18, 1984
    Assignee: Foster Industries Company Limited
    Inventor: Chung S. Leung
  • Combined fluorescent and incandescent lantern
    Patent number: D285974
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: September 30, 1986
    Assignee: Foster Industries Company Limited
    Inventor: Chung S. Leung
  • Combined portable fluorescent light and incandescent lantern
    Patent number: D287643
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: January 6, 1987
    Assignee: Foster Industries Company Limited
    Inventor: Chung S. Leung
  • Vacuum cleaner
    Patent number: D290417
    Type: Grant
    Filed: August 14, 1984
    Date of Patent: June 16, 1987
    Assignee: Foster Industries Company Limited
    Inventor: Chung S. Leung
  • Rechargeable flashlight
    Patent number: D333527
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: February 23, 1993
    Assignee: Foster Industries Co., Ltd.
    Inventor: Chung S. Leung