Patents by Inventor Robert John Oliver

Robert John Oliver 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: 4093225
    Abstract: The invention is concerned with a marker for the anchoring device of a captive ball and cord in a game comprising a spiral mounted on a stand and a ball on a cord, the other end of which is associated with the spiral for relative movement therewith according to the direction in which the ball is hit, the marker providing a prominent visual indication to the players of the game of the location of the anchoring device relative to the spiral; the marker optionally serving to hold the cord to the spiral.
    Type: Grant
    Filed: October 5, 1976
    Date of Patent: June 6, 1978
    Assignee: Zimm-Zamm Aktiengesellschaft
    Inventor: Robert John Oliver