Granted Patent
Utility
US 5,146,534 · App. 07/790,836
SiO.sub.2 -based alkali-doped optical fiber
Inventor:
Malcolm E. Lines
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Nov 12, 1991
Inventor
Malcolm E. Lines
Assignee (at issue)
AT&T Bell Laboratories
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.