Granted Patent
Utility
US 4,775,978 · App. 07/003,961
Data error correction system
Inventor:
Carl B. Hartness
Patented Case
View Patent ↗
Granted: Oct 4, 1988
Filed: Jan 12, 1987
Inventor
Carl B. Hartness
Assignee (at issue)
Magnetic Peripherals, 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.