Granted Patent
Utility
US 4,800,259 · App. 06/906,065
Document track work station
Inventors:
David Michael Steele, Robert G. Bradford
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: Sep 11, 1986
Inventors
David Michael Steele
Robert G. Bradford
Assignee (at issue)
Unisys 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.