Granted Patent
Utility
US 5,214,527 · App. 07/587,867
Electronically switched multiple-channel optical receiver
Inventors:
Gee-Kung Chang, Won Pyo Hong
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Sep 26, 1990
Inventors
Gee-Kung Chang
Won Pyo Hong
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.