Granted Patent
Utility
US 4,775,401 · App. 07/063,196
Method of producing an optical fiber
Inventors:
Debra Anne Fleming, David W. Johnson, Jr., John B. MacChesney, Frederick W. Walz, Jr.
Patented Case
View Patent ↗
Granted: Oct 4, 1988
Filed: Jun 18, 1987
Inventors
Debra Anne Fleming
David W. Johnson, Jr.
John B. MacChesney
Frederick W. Walz, Jr.
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.