Patents by Inventor Dan McGrail

Dan McGrail 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).

  • Basketball retrieval device
    Patent number: 6056652
    Abstract: Basketball retrieval devices are provided. The devices have use and storage positions, whereby the devices include collapsible walls that permit the devices to be collapsed into a compact storage position and opened into a use position for permitting a player to practice foul-throw shooting.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: May 2, 2000
    Assignee: HoopMaster, Inc.
    Inventors: Charles W. Lees, Jeffrey Sparr, Stephen Lane, Dan McGrail, Justin Sirotin, Aidan Petrie