Patents by Inventor John R. Letchworth

John R. Letchworth 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).

  • Textile tube dolly
    Patent number: 4171828
    Abstract: A dolly is provided for transporting and storing textile tubes. The dolly comprises a split shallow-walled platform mounted on a plurality of casters. The two halves of the platform are hinged so that they can be pivoted to an open or closed position. One half of the platform is mounted on at least two stationary casters to inhibit lateral movement of the dolly when in the open position.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: October 23, 1979
    Assignee: Allied Chemical Corporation
    Inventors: Gerald F. Goodwin, John R. Letchworth, Richard A. Botset