Patents by Inventor Leavenworth P. Sperry

Leavenworth P. Sperry 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).

  • Container support
    Patent number: 4198020
    Abstract: Our invention relates to improved devices for supporting in upright position, containers for plants, flowers, liquids, etc. during transportation of same, or when located in exposed situations, comprising a "knock-down" base, resilient elements releasably and adjustably secured thereto and carrying receptacle engaging elements.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: April 15, 1980
    Assignee: Waterbury Companies, Inc.
    Inventors: George A. Walker, Leavenworth P. Sperry, Robert B. Sutherland