Granted Patent
Utility
US 5,630,650 · App. 08/220,041
Vertically adjustable back construction for seating
Inventors:
Gordon J. Peterson, Arnold B. Dammermann, Charles P. Roossien, David L. Rundhaug, James M. Mancewicz
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Mar 30, 1994
Inventors
Gordon J. Peterson
Arnold B. Dammermann
Charles P. Roossien
David L. Rundhaug
James M. Mancewicz
Assignee (at issue)
Steelcase Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.