Granted Patent
Utility
US 5,397,372 · App. 08/159,179
MCVD method of making a low OH fiber preform with a hydrogen-free heat source
Inventors:
Fred P. Partus, Gordon Albert Thomas
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: Nov 30, 1993
Inventors
Fred P. Partus
Gordon Albert Thomas
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.