Patents by Inventor Michael R. Havis

Michael R. Havis 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: D286509
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: November 4, 1986
    Inventor: Michael R. Havis
  • Patent number: D289721
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: May 12, 1987
    Inventor: Michael R. Havis