Granted Patent
Utility
US 4,257,797 · App. 06/080,482
Optical fiber fabrication process
Inventors:
Matthew J. Andrejco, John B. MacChesney
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Oct 1, 1979
Inventors
Matthew J. Andrejco
John B. MacChesney
Assignees (at issue)
Western Electric Company, Inc.
Bell Telephone Laboratories, Inc.
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.