Patents by Inventor Lau Ka Chun

Lau Ka Chun 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).

  • Pressure washer
    Patent number: D592816
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: May 19, 2009
    Assignee: Eastway Fair Company Limited
    Inventor: Lau Ka Chun