Patents by Inventor Tsasa Lusala

Tsasa Lusala 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).

  • Language learning device
    Patent number: D447179
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: August 28, 2001
    Inventor: Tsasa Lusala