Granted Patent
Utility
US 4,764,764 · App. 06/675,112
Write-protect apparatus for bit mapped memory
Inventor:
Joseph H. Mulkern
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Nov 27, 1984
Inventor
Joseph H. Mulkern
Assignee (at issue)
Honeywell Limited
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.