Granted Patent
Utility
US 6,428,868 · App. 08/960,865
Twisting-cylinder display
Inventors:
Nicholas K. Sheridon, Joseph M. Crowley
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Oct 30, 1997
Inventors
Nicholas K. Sheridon
Joseph M. Crowley
Assignee (at issue)
Xerox 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.