Granted Patent
Utility
US 5,064,247 · App. 07/528,317
Wire rod office furniture stacking chair
Inventors:
Craig A. Clark, Robert J. Poortvliet
Patented Case
View Patent ↗
Granted: Nov 12, 1991
Filed: May 23, 1990
Inventors
Craig A. Clark
Robert J. Poortvliet
Assignee (at issue)
Allsteel 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.