Granted Patent
Utility
US 5,909,295 · App. 08/743,733
Hybrid bi-directional wavelength division multiplexing device
Inventors:
Jinghui Li, Mark Farries, Joseph Ip
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Nov 6, 1996
Inventors
Jinghui Li
Mark Farries
Joseph Ip
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.