Patents by Inventor Kaj Clausen Nielsen

Kaj Clausen Nielsen 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).

  • Sign having a movable front plate
    Patent number: 6182386
    Abstract: A sign is provided having a rear plate (2) having at least two printed messages (5,6) and a front plate (3) arranged movably in front of the rear plate (2). The front plate (3) is arranged such that in its starting position it covers all the messages (5,6) on the rear plate (2), and that, by movement, it may be caused to expose at least one of the messages (5,6).
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: February 6, 2001
    Assignee: A/S Modulex
    Inventor: Kaj Clausen Nielsen