Patents by Inventor Andreas Holterhus

Andreas Holterhus 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).

  • Spacing retainer including locking means for reinforcements
    Patent number: 4744190
    Abstract: The spacing retainer contains spacer elements comprising a multiple number of interconnected angle elements and locking elements. The locking elements are lockingly connected with a first structural steel fabric by means of locking parts at their free ends. A second structural steel fabric is held at a spacing from the first structural steel fabric by means of the series-arranged and side-by-side arranged spacer elements. The spacer elements comprise struts for their reinforcement.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: May 17, 1988
    Inventors: Paul Couwenbergs, Andreas Holterhus