Granted Patent
Utility
US 5,642,454 · App. 08/573,672
Method and apparatus for making optical fiber preforms and optical fibers fabricated therefrom
Inventors:
Nonna Kopylov, Ahmet Refik Kortan
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Dec 18, 1995
Inventors
Nonna Kopylov
Ahmet Refik Kortan
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.