Patents Assigned to Practical Products Mfy. Ltd.
  • Torch
    Patent number: D267278
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: December 14, 1982
    Assignee: Practical Products Mfy. Ltd.
    Inventor: Andrew K. Yau
  • Torch
    Patent number: D267279
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: December 14, 1982
    Assignee: Practical Products Mfy. Ltd.
    Inventor: Andrew K. Yau
  • Flashlight
    Patent number: D283924
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: May 20, 1986
    Assignee: Practical Products Mfy, Ltd
    Inventor: Andrew Yau
  • Lantern
    Patent number: D352565
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: November 15, 1994
    Assignee: Practical Products Mfy. Ltd.
    Inventor: Kai Ching A. Yau