Patents by Inventor Robert T. M. Van Erum

Robert T. M. Van Erum 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).

  • Patent number: 4669210
    Abstract: The information board comprises a supporting board provided with grooves between which clip strips are formed, which clip strips have a groove in their lateral sides. Snap-in plates comprise a rectangular body and two backwards projecting legs having on the sides thereof facing each other two bosses. A projection is mounted, between the legs, on the body. When a snap-in plate is clipped over one or more clip strips said projection abuts against the clip-strip. The bosses enter in grooves in the lateral sides of the clip strips. By pushing on an edge of the body a leg can slide more deeply over the clip strip so that the snap-in plate tilts and snap-off.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: June 2, 1987
    Inventor: Robert T. M. Van Erum