Granted Patent
Utility
US 4,842,626 · App. 07/057,681
Process for making optical fibers
Inventors:
Robert L. Barns, Edwin Arthur Chandross, Suzanne R. Nagel
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: May 28, 1987
Inventors
Robert L. Barns
Edwin Arthur Chandross
Suzanne R. Nagel
Assignee (at issue)
American Telephone and Telegraph Company, 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.