Patents by Inventor Gerald F. McDonald

Gerald F. McDonald 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).

  • Line test termination device
    Patent number: 4373120
    Abstract: A line test termination device to provide a characteristic signature recognizable by the telephone central office when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a resistor and a diode connected in series between the conductive paths. A neon tube device placed in series with the resistor and diode will be illuminated when a ringing voltage is applied to the line and no telephone ringing circuit is connected thereto.
    Type: Grant
    Filed: January 13, 1981
    Date of Patent: February 8, 1983
    Assignee: TII Industries Inc.
    Inventor: Gerald F. McDonald
  • Travel game device
    Patent number: 4290607
    Abstract: A travel game device is disclosed comprising a game board and a plurality of card sets, each card set having individual cards therein with instructions thereon for the advance of game play. The game also has game pieces for movement over a simulated map route and chance means such as one die or more for the advancement of the game piece and the selection of cards from the card sets for the advancement of game play.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: September 22, 1981
    Inventor: Gerald F. McDonald