Patents by Inventor Sing Leung

Sing 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).

  • Vacuum cleaner
    Publication number: 20060137133
    Abstract: A vacuum cleaner, includes a first compartment for receiving air-entrained dust particles drawn therein by a fan, and a second compartment for receiving debris delivered thereto by a motor-driven bristle bar past which the fan draws air.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 29, 2006
    Inventors: Chi Yik, Sing Leung