Patents by Inventor Nancy Mardesich Halvorsen

Nancy Mardesich Halvorsen 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).

  • Water closet cover
    Patent number: D243088
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: January 18, 1977
    Inventor: Nancy Mardesich Halvorsen
  • Water closet cover
    Patent number: D243089
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: January 18, 1977
    Inventor: Nancy Mardesich Halvorsen