Patents by Inventor Joan A. Shortes

Joan A. Shortes 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).

  • Dismantling ladder
    Patent number: 4086980
    Abstract: A dismantling ladder is provided wherein the rails are made of different sizes with the rungs of a still smaller size so that one rail can be telescoped inside the other and a rung telescoped inside the smaller rail so that the ladder can be stored in minimum of space.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: May 2, 1978
    Inventors: Lois E. Shortes, Joan A. Shortes