Patents by Inventor Dale A. Friesenhahn

Dale A. Friesenhahn 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: D329501
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: September 15, 1992
    Inventor: Dale A. Friesenhahn