Granted Patent
Utility
US 4,616,901 · App. 06/527,970
Doped optical fiber
Inventors:
John B. MacChesney, Jay R. Simpson, Kenneth L. Walker
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Aug 31, 1983
Inventors
John B. MacChesney
Jay R. Simpson
Kenneth L. Walker
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.