Patents by Inventor Dwight F. Bartenstein

Dwight F. Bartenstein 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).

  • Portable liquid storage tank with external frame
    Patent number: 5582311
    Abstract: A portable liquid storage tank has an external frame and internal walls defining an at least partially enclosed storage volume for liquids. The rigid frame includes a plurality of members connected by moment-resisting joints. The tank walls are formed of a plurality of plates affixed within the tank frame. The liquid storage volume defined by the tank walls is free of structures which can trap liquids.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 10, 1996
    Assignee: Baker Tanks, Inc.
    Inventors: Dwight F. Bartenstein, Douglas W. Baker, James N. Holmes