Patents by Inventor Fredrik Burmeister

Fredrik Burmeister 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).

  • Air-cushion vehicle
    Patent number: 4369853
    Abstract: The invention relates to an air-cushion vehicle comprising a hull, two air propulsion units located at a considerable distance from each other and one or several drive engines for the propulsion units. One of the propulsion units is located at the front end of the vehicle at one side of its longitudinal axis. The other unit is located at the rear end of the vehicle at the opposite side of said axis.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 25, 1983
    Assignee: Oy Wartsila Ab
    Inventors: Pentti Heijola, Fredrik Burmeister