Patents by Inventor Per Sigurd Nes

Per Sigurd Nes 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: 4121892
    Abstract: A holder for sheets such as sheets of paper with at least a pair of holes along one edge portion for receiving a pair of flexible locking tongues, which are made integral with a plastic strip having slits corresponding to the shape of the tongues for allowing the formation of the tongues, the latter being intended for bending up to a position substantially at right angles to the strip for introduction into the holes of the sheet, and into the appropriate openings of a locking strip having a bottom wall and side walls, for thereafter bending down over the bottom wall. A pair of riders are displaceable along the locking strip subsequently being moved into a position one over either tongue, for retaining it in a downwardly bent position. On its underside intended to be facing towards the bottom wall of the locking strip, each locking tongue is provided with locking teeth intended to engage with complementary locking teeth formed in the bottom wall of the locking strip.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: October 24, 1978
    Inventor: Per Sigurd Nes