Granted Patent
Utility
US 5,356,447 · App. 08/029,753
Manufacture of high proof-test optical fiber using sol-gel
Inventor:
Suhas Bhandarkar
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Mar 11, 1993
Inventor
Suhas Bhandarkar
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.