Granted Patent
Utility
US 5,378,664 · App. 08/082,007
Optical fiber amplifier and a glass therefor
Inventors:
Philippe C. Becker, Allan James Bruce, David J. DiGiovanni, Vincent George Lambrecht, Jr.
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Jun 24, 1993
Inventors
Philippe C. Becker
Allan James Bruce
David J. DiGiovanni
Vincent George Lambrecht, Jr.
Assignee (at issue)
AT&T CORP.
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.