Patents by Inventor Michael D. Hoilien

Michael D. Hoilien 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: D306124
    Type: Grant
    Filed: November 18, 1986
    Date of Patent: February 20, 1990
    Assignee: Springhill Company
    Inventor: Michael D. Hoilien