Granted Patent
Utility
US 4,883,330 · App. 07/193,239
Spine assembly
Inventors:
Eric J. Armstrong, David D. McClanahan
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: May 11, 1988
Inventors
Eric J. Armstrong
David D. McClanahan
Assignee (at issue)
Knoll International 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.