Granted Patent
Utility
US 5,318,346 · App. 08/055,927
Chair with zero front rise control
Inventors:
Charles P. Roossien, David C. Pugh, Dale M. Groendal, James E. Massey, Robert Scheper, Daniel P. Beemer, James P. Steffens, Duane F. Nagel, Bruce M. Smith, Douglas A. Smith
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Apr 30, 1993
Inventors
Charles P. Roossien
David C. Pugh
Dale M. Groendal
James E. Massey
Robert Scheper
Daniel P. Beemer
James P. Steffens
Duane F. Nagel
Bruce M. Smith
Douglas A. Smith
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.