Patents by Inventor Shan-Feng Lien

Shan-Feng Lien 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).

  • Rotary and rocking toy device
    Patent number: 5954588
    Abstract: A rotary and rocking toy device has four bottom seats, four roller wheels, four support frames, and four carriers. The support frames are connected together to form a cross shape. Each roller wheel is disposed on the respective bottom seat. Each support frame is connected to the respective roller wheel pivotally. Each carrier is connected to the respective support frame stably.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: September 21, 1999
    Inventor: Shan-Feng Lien