Granted Patent
Utility
US 5,673,141 · App. 08/528,757
Optical amplifier
Inventor:
Piero Gambini
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Sep 15, 1995
Inventor
Piero Gambini
Assignee (at issue)
CSELT-Cento Studi E Laborati Telecomunicazioni S.p.A.
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.