Patents by Inventor Frank A. Lilienthal

Frank A. Lilienthal 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).

  • Apparatus for controlling a vessel's horn
    Patent number: 5072362
    Abstract: An apparatus for controlling a vessel's horn and automatically sounding navigational signals is disclosed. The apparatus provides a plurality of predetermined horn signals and horn modes, any of which may be selected by pressing an appropriate key on a keypad. The apparatus includes fog modes which will automatically repeat an appropriate horn signal within a predetermined period of time. The apparatus permits a helmsman and other crew members to attend to other duties without constant attention to the vessel's horn.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: December 10, 1991
    Assignee: Boating Laboratories, Inc.
    Inventor: Frank A. Lilienthal