Granted Patent
Utility
US 5,026,409 · App. 07/292,792
Preparation of fluoride glass optical preforms and fibers
Inventors:
M. Robinson, Antonio C. Pastor, Ricardo C. Pastor
Patented Case
View Patent ↗
Granted: Jun 25, 1991
Filed: Jan 3, 1989
Inventors
M. Robinson
Antonio C. Pastor
Ricardo C. Pastor
Assignee (at issue)
Hughes Aircraft Company
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.