Patents by Inventor Earl F. Roberts

Earl F. Roberts 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).

  • Universal fishing weight
    Patent number: 3955305
    Abstract: A weight body which is provided with a longitudinally extending groove with opposed transverse grooves for receiving the lip portions of a retainer, the structure being such that it may be used four different ways.
    Type: Grant
    Filed: May 1, 1975
    Date of Patent: May 11, 1976
    Inventor: Earl F. Roberts