Patents by Inventor Agust Agustsson

Agust Agustsson 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).

  • Underground work chamber assembly and method for the construction thereof
    Patent number: 5302052
    Abstract: An underground work chamber assembly including a chamber, elevator shaft, air path, utility path, and slotted grout pipes which is assembled as lowered into a drilled hole on dry land or underwater, the slotted grout pipes facilitating a controlled grouting of the space surrounding the underground work chamber assembly when in place.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: April 12, 1994
    Assignee: Groundtech, Inc.
    Inventors: Agust Agustsson, Richard A. Wallers, Tomas H. Agustsson