Patents by Inventor Stephen Hivko

Stephen Hivko 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).

  • Boat hull with grab rails on its underside
    Patent number: 4003099
    Abstract: A pair of grab rails on an underside of a boat hull is disclosed, so that in case the boat hull is capsized, persons may hold onto the rails, so as not to be carried away by wind and waves. The rails also aid in rolling over and righting the boat. The grab rails are sidewardly slideable from longitudinally extended runners formed on the hull bottom.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: January 18, 1977
    Inventor: Stephen Hivko