Granted Patent
Utility
US 4,701,745 · App. 06/835,793
Data compression system
Inventor:
John R. Waterworth
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: Mar 3, 1986
Inventor
John R. Waterworth
Assignee (at issue)
Ferranti plc
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.