Patents by Inventor David J. Barnett

David J. Barnett 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).

  • Economic board game
    Patent number: 4150827
    Abstract: A board game played with dice in which the players are involved in a trading situation, the game including (1) a board marked with a plurality of stations defining a route to be followed and with areas representing a plurality of trading enterprises, (2) a set of cards bearing instructions for establishing a set of economic determinants and (3) indicators for effecting and/or recording, preferably on the board itself, trading transactions between a bank and the players.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: April 24, 1979
    Inventor: David A. J. Barnett
  • Can opener
    Patent number: D292866
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: November 24, 1987
    Assignee: Mike & Kremmel Ltd
    Inventor: David J. Barnett
  • Corkscrew
    Patent number: D299001
    Type: Grant
    Filed: August 13, 1985
    Date of Patent: December 20, 1988
    Assignee: Ilesso Anstalt Limited
    Inventor: David J. Barnett
  • Corkscrew
    Patent number: D302233
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: July 18, 1989
    Assignee: Ilesso Anstalt Limited
    Inventor: David J. Barnett
  • Device for removing caps or tops from sealed containers
    Patent number: D302643
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: August 8, 1989
    Inventors: David J. Barnett, Alan W. E. Knight
  • Egg slicer
    Patent number: D318601
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: July 30, 1991
    Assignee: Maxpat Trading & Marketing (Far East Limited)
    Inventor: David J. Barnett