Patents by Inventor Sylvester Klus

Sylvester Klus 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).

  • Patent number: 5242211
    Abstract: A swivel chair has of an upper frame comprising a seat and, optionally, comprising a back rest, and an underframe and a supporting column. The supporting column extends between the upper frame and the underframe. The upper frame is pivotally mounted at the upper end of the supporting column by a bracket and the supporting column is mounted to the underframe. The supporting column is linked with the underframe outside the vertical projection of the upper frame and the seat, at its periphery, is provided with a recess, the width of which corresponds substantially to the outer diameter of the supporting column. The back rest, if present, is provided with a back rest cleavage corresponding to the recess.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: September 7, 1993
    Inventors: Jan Grad, Sylvester Klus, Peter W. Karg, Michael Hertig