Patents by Inventor Ralph E. Jonsson

Ralph E. Jonsson 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).

  • Patent number: D253231
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: October 23, 1979
    Assignee: Saab-Scania Aktiebolag
    Inventors: Bjorn E. A. Envall, Ralph E. Jonsson
  • Patent number: D254907
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: May 6, 1980
    Assignee: Saab-Scania Aktiebolag
    Inventors: Bjorn E. A. Envall, Ralph E. Jonsson
  • Patent number: D260984
    Type: Grant
    Filed: December 7, 1978
    Date of Patent: September 29, 1981
    Inventor: Ralph E. Jonsson
  • Patent number: D289029
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: March 31, 1987
    Assignee: Saab-Scania Aktiebolag
    Inventors: Bjorn E. A. Envall, Ralph E. Jonsson