Patents by Inventor William Rupert

William Rupert 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).

  • Marine smoke markers
    Patent number: 3961259
    Abstract: In a buoyant smoke marker for marine use, the provision of a radio transmitter. The marker can be located from much greater distances than can conventional smoke markers.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: June 1, 1976
    Assignee: Pains-Wessex Limited
    Inventors: William Rupert Brooke Elstow, David Michael Jennings
  • Loudspeaker
    Patent number: D384353
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: September 30, 1997
    Assignee: Britannia Investment Corporation
    Inventors: Arnie Nudell, John B. Poling, William Rupert, Bradley M. Starobin, Mark Waker
  • Loudspeaker
    Patent number: D387058
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: December 2, 1997
    Assignee: Britannia Investment Corporation
    Inventors: Arnie Nudell, John B. Poling, William Rupert, Bradley M. Starobin, Mark Waker