Patents by Inventor Nader Shafii-Rad-G.

Nader Shafii-Rad-G. 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).

  • Drawing aid with interchangeable insert
    Patent number: 4505044
    Abstract: A drawing aid having a sandwich-like structure in which the middle layer is an interchangeable pattern insert. The insert is interchangeable with other inserts, each insert having a particular pattern. The interchangeability of the insert enables the drawing of different lines, shapes, letters, etc. using the same template housing. A particularly useful embodiment allows one to draw a line over the insert pattern, producing broken lines without lifting the drawing tool.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: March 19, 1985
    Inventor: Nader Shafii-Rad-G.