Patents by Inventor Donald J. Allison

Donald J. Allison 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).

  • Golf ball retriever
    Patent number: 4744593
    Abstract: A device for retrieving golf balls consists of a pair of discs or disc portions rotatably mounted upon a plastic body. The shaft used to rotatably support the discs also serves to maintain the prongs of the body in a spaced relationship in which they develop an optimal amount of force upon the discs. The head assembly consists of only a few parts, and no supplemental means is necessary to secure them.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: May 17, 1988
    Inventors: Rodney J. Spielman, Donald J. Allison
  • Golf ball retriever
    Patent number: 4669770
    Abstract: A device for retrieving golf balls consists of a pair of discs rotatably mounted upon a plastic body. The shaft used to rotatably support the discs also serves to maintain the prongs of the body in a spaced relationship in which they develop an optimal amount of force upon the discs. The head assembly consists of only a few parts, and no supplemental means is necessary to secure them.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: June 2, 1987
    Assignee: Golftech Inc.
    Inventors: Rodney J. Spielman, Donald J. Allison
  • Ball retriever head assembly
    Patent number: D304851
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: November 28, 1989
    Assignee: Golftech Inc.
    Inventors: Donald J. Allison, Rodney J. Spielman