Patents by Inventor Leo Siemann

Leo Siemann 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).

  • Publication number: 20080093897
    Abstract: This particular invention relates to furniture, more specifically to office furniture. The main difference is the unique construction of the frame, which has space between its two levels under the seat, enable the chair to carry different kind of mechanical-, electronic- and digital devices or equipment. It also has an adjustable, revolving seat, folding back, detachable armrests and footrests, shelf, and carrying strap. Three or more revolving wheels are fixed to the frame. The idea of the poly functional invention is economizing the space.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 24, 2008
    Inventor: Leo Siemann