Patents by Inventor Zuo-Heng Liu

Zuo-Heng Liu 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).

  • Stationery goods holder and book shelf combination
    Patent number: 5358324
    Abstract: A stationery goods holder includes a housing having one or more openings formed in the top, one or more drawers disposed in the upper portion for accommodating stationery goods, a number of bars laterally engaged in the side portion of the housing so as to form a book shelf. A number of shafts are rotatably supported in the housing, and a sheet material is wound on each of the shafts, the sheet materials can be pulled outwards of the housing for taking notes.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: October 25, 1994
    Inventor: Zuo-Heng Liu