Patents by Inventor Chuang-Li Hwang

Chuang-Li Hwang 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).

  • Twisting car
    Patent number: 4200304
    Abstract: This invention is to provide a kind of sporting toy car for children, which mainly raises children's interest in toys of this type and provides a wholesome physical exercise for children playing with it to promote their growth.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: April 29, 1980
    Inventor: Chuang-Li Hwang