Patents by Inventor Earl C. Clark

Earl C. Clark 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).

  • Trellis arm and support
    Patent number: 4023307
    Abstract: A trellis arm and a support wire therefor. The arm has a hole in the first end to swingably attach the arm to a trellis post and a notch in its second end to receive the trellis wire. The support wire overlies the outer end of the arm, extends under the trellis wire and is attached to the top of the trellis post.The support wire may be in the form of a continuous loop.Various types of trellis arms have been proposed for supporting grape trellis wires but these trellis arms have not been as simple and efficient as is desirable.
    Type: Grant
    Filed: May 4, 1976
    Date of Patent: May 17, 1977
    Assignee: Mark Lewis
    Inventors: Earl C. Clark, William L. Lewis