Patents by Inventor Harold John Ellington

Harold John Ellington 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).

  • Frame structure for swimming pool
    Patent number: 4055922
    Abstract: The structure of forming panels and panel segments for use in assembling free form pools is disclosed. Structural relationships regarding radius of bend of the forming panels and their lengths in terms of angle of arc defined per panel permit the construction of a plurality of pool shapes, e.g. kidney, oval, figure-eight, from a minimum of panel and panel segments.
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: November 1, 1977
    Assignee: Heldor Associates, Inc.
    Inventors: Harold John Ellington, Roy C. McNeil