Granted Patent
Utility
US 6,442,909 · App. 09/829,028
Knock-down portable partition system
Inventors:
Michael L. Waalkes, Marcus K. Pressnell, Mark T. Slager, Michael R. Shields, Brian J. Kane, Robin Christopher, Dennis J. Boyle, Peter Skillman, Charles A. Seiber, Joseph Chang
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Apr 9, 2001
Inventors
Michael L. Waalkes
Marcus K. Pressnell
Mark T. Slager
Michael R. Shields
Brian J. Kane
Robin Christopher
Dennis J. Boyle
Peter Skillman
Charles A. Seiber
Joseph Chang
Assignee (at issue)
Steelcase Development Corporation
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.