Granted Patent
Utility
US 5,452,124 · App. 08/206,423
Unidirectional amplification for bi-directional transmission using wavelength-division multiplexing
Inventor:
Phillip E. Baker
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Mar 4, 1994
Inventor
Phillip E. Baker
Assignee (at issue)
Williams Telecommunications Group, 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.