Patents by Inventor Andrew K. Yau

Andrew K. Yau 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).

  • 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