Patents by Inventor R. David Calvo

R. David Calvo 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).

  • Patent number: 4968041
    Abstract: A game apparatus comprising a game board adapted for horizontal disposition and having an upstanding backboard and a pair of sideboards extending upwardly from the game board. The backboard, and sideboards and the playing board all defining playing surfaces at which a plurality of quoits are physically thrown by a player from a remote position in attempt to land the quoit, by direct hit or by rebound, into a target cup recessed in and below the playing surface. The sideboards are each characterized by a sloped upper wall each sideboard define a frontal approach by the player to the playing board so as to encourage tossing of the quoits from the front or from the side, either by tossing the quoit, rebounding it or rolling it into the scoring cup.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: November 6, 1990
    Inventor: R. David Calvo