Patents by Inventor Birger Johannes Natvig

Birger Johannes Natvig 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).

  • Deck structure and method for building same
    Patent number: 3977346
    Abstract: A deck structure is assembled on a base structure which extends upwardly out of a body of water and is supported on the bottom of the water body. The deck structure is separately constructed as a self-supporting horizontal unit at a building site such as a pier, and floating barges are provided for supporting the deck structure outwardly of the building site. The deck structure is thereafter transferred to the base structure by means of the barges.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: August 31, 1976
    Assignee: A/S Akers Mek. Verksted
    Inventors: Birger Johannes Natvig, Per Christian Sandnaes, Per-Gustav Lindeberg, Olaf Salvesen