Granted Patent
Utility
US 5,195,149 · App. 07/835,291
Fiber optic amplifier
Inventors:
Thomas Pfeiffer, Rolf Rossberg, Henning Bulow
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Feb 13, 1992
Inventors
Thomas Pfeiffer
Rolf Rossberg
Henning Bulow
Assignee (at issue)
Alcatel N.V.
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.