Patents by Inventor Larry F. Graham

Larry F. Graham 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).

  • Apparatus and method for singulating seedlings
    Patent number: 4431115
    Abstract: An apparatus and method for singulating seedlings in which bundled seedlings are contained within a hopper and are intermittently tumbled. Seedlings are singulated by being engaged with a vacuum nozzle, separated from a bundle of seedlings, gripped, and extracted from the hopper.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: February 14, 1984
    Assignee: North Carolina State University
    Inventors: Larry F. Graham, Roger P. Rohrbach