Granted Patent
Utility
US 4,169,288 · App. 05/791,139
Redundant memory for point of sale system
Inventors:
Bruce Fairman, G. Ray Durney, Robert G. Taylor
Patented Case
View Patent ↗
Granted: Sep 25, 1979
Filed: Apr 26, 1977
Inventors
Bruce Fairman
G. Ray Durney
Robert G. Taylor
Assignee (at issue)
International Telephone and Telegraph 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.