Granted Patent
Utility
US 4,580,841 · App. 06/588,243
Modular chair seat structure
Inventor:
William B. Raftery
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Mar 12, 1984
Inventor
William B. Raftery
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.