Granted Patent
Utility
US 4,904,041 · App. 07/287,395
Short optical pulse generator having a looped directional coupler external cavity
Inventor:
Hossein Izadpanah
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Dec 20, 1988
Inventor
Hossein Izadpanah
Assignee (at issue)
Bell Communications Research, 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.