Granted Patent
Utility
US 4,704,713 · App. 06/813,386
Optical ring network
Inventors:
Neil M. Haller, Lanny S. Smoot
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Dec 26, 1985
Inventors
Neil M. Haller
Lanny S. Smoot
Assignee (at issue)
Bell Communications Research, 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.