Granted Patent
Utility
US 4,718,754 · App. 06/860,156
Optical line simulator
Inventor:
Graham McIntosh
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: May 6, 1986
Inventor
Graham McIntosh
Assignee (at issue)
Plessey Overseas 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.