Patents by Inventor Jonas Lonnroth

Jonas Lonnroth 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).

  • Method of navigation for sailing boats
    Patent number: 4149410
    Abstract: A method and a device for facilitating the determination of wind direction and the position of a sailing vessel on a racing course. One and the same geographical bearing determined by the wind direction can be read on both tacks. The same graduation number may be watched on both tacks and this number refers to the wind direction.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: April 17, 1979
    Assignee: AB Instrument Verken
    Inventor: Jonas Lonnroth
  • Compass-rose scale
    Patent number: D252560
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: August 7, 1979
    Assignee: Aktiebolaget Instrument Verken
    Inventor: Jonas Lonnroth