Patents by Inventor Jeffery N. Fletcher

Jeffery N. Fletcher 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).

  • Method and apparatus for pruning cordon-trained grape vines
    Patent number: 4543775
    Abstract: Cordon-trained grape vines are pruned by positioning circular saw blades to form a cutting path of predetermined size and shape above and on both sides of the horizontal trellis wire on which the cordons are trained and by translating the cutting path along the trellis wire while maintaining the size and shape of the cutting path substantially constant, while maintaining the sides of the cutting path centered on the cordons and maintaining the upper part of the cutting path at a desired height above the cordons.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: October 1, 1985
    Assignee: Up-Right, Inc.
    Inventors: Darrell C. Horn, Jeffery N. Fletcher