Granted Patent
Utility
US 5,731,891 · App. 08/604,045
Optical amplifier
Inventor:
Johannes Christiaan van der Plaats
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Feb 20, 1996
Inventor
Johannes Christiaan van der Plaats
Assignee (at issue)
LUCENT TECHNOLOGIES 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.