Patents by Inventor Ching-Lin Wei

Ching-Lin Wei 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).

  • Multifunctional drawing implement box
    Patent number: 5475931
    Abstract: A drawing implement box includes a first ruler section, a second ruler section which has a scale of angles thereon, and a positioning member for securing the first and second ruler sections together yet allowing relative rotational movements therebetween for measuring angles. Each of the first and second ruler sections has a compartment therein for receiving a drawing implement goods.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: December 19, 1995
    Inventor: Ching-Lin Wei
  • Pen
    Patent number: D361783
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: August 29, 1995
    Inventor: Ching-Lin Wei