Patents by Inventor Scott Tollefson

Scott Tollefson 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).

  • Apparatus for burying conduit
    Patent number: 4637755
    Abstract: Apparatus for simultaneously burying multiple strands of tubing in a plowed field. The plowed field includes spaced, elongate, generally parallel upstanding beds. A furrow lies in between each adjacent pair of beds. The apparatus buries tubing in the beds. The conduit has an oblong cross sectional area. The apparatus is designed to prevent the tubing from twisting while being buried in the beds.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 20, 1987
    Inventors: Scott Tollefson, Howard A. Wuertz, Charles R. Schultz