Patents by Inventor Roy V. Friesen

Roy V. Friesen 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).

  • Doll house
    Patent number: D243110
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: January 18, 1977
    Inventor: Roy V. Friesen
  • Doll house
    Patent number: D252111
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: June 12, 1979
    Inventor: Roy V. Friesen