Patents by Inventor Irvin R. Tiede

Irvin R. Tiede 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).

  • Grille for security institutions
    Patent number: 5375373
    Abstract: A grille for security institutions consists of a body having two opposed faces. At least one passage extends through the body between the opposed faces. The passage has at least two changes in direction defining a generally zig zag course. When a rope is inserted into the passage the series of direction changes severely limit the ability of a person to thread the rope through the passage.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: December 27, 1994
    Assignee: Multi-Line Enterprises Ltd.
    Inventor: Irvin R. Tiede