Granted Patent
Utility
US 6,128,425 · App. 09/143,656
Semiconductor optical amplifier device
Inventors:
Beatrice Dagens, Christopher Janz
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Aug 31, 1998
Inventors
Beatrice Dagens
Christopher Janz
Assignee (at issue)
ALCATEL
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.