Patents by Inventor Wallace Cheung

Wallace Cheung 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).

  • Portable CD radio
    Patent number: D547745
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: July 31, 2007
    Inventor: Wallace Cheung
  • Portable CD radio
    Patent number: D575765
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: August 26, 2008
    Inventor: Wallace Cheung