Patents by Inventor Frederic Lemercier

Frederic Lemercier 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).

  • Modular constructional element in particular of a ladder or scaffolding
    Patent number: 4907675
    Abstract: This modular constructional element (14), which is of the type comprising at least two uprights between which at least one crosspiece extends, is such that each end of the uprights is screw-threaded and adapted to cooperate with a fixing ring (18, 19) for fixing the element (14) to an adjacent means (15).
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: March 13, 1990
    Inventors: Gerard Saby, Frederic Lemercier