Granted Patent
Utility
US 5,221,983 · App. 07/299,401
Passive photonic loop architecture employing wavelength multiplexing
Inventor:
Stuart Wagner
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jan 19, 1989
Inventor
Stuart Wagner
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.