Patents by Inventor Hal Hendrixson

Hal Hendrixson 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: D243809
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: March 29, 1977
    Inventor: Hal Hendrixson