Patents by Inventor Paul Henry Hill

Paul Henry Hill 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: 3984138
    Abstract: An apparatus for retrieving individual or a plurality of balls such as tennis balls from a playing court and for automatically storing the balls which includes a metal wire or rod frame in which the retrieved balls are stored. The frame has an exit opening at one end and an entrance opening at an opposite end thereof. Restraining rods are secured across the entrance opening and are positioned in the entrance opening to define a plurality of entry spaces of graduated dimensions, all less than the diameter of a ball so that the ball must be squeezed through the entry spaces into the central storage area afforded by the frame.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: October 5, 1976
    Assignee: Hill Industries, Inc.
    Inventors: William Brunner, Paul Henry Hill