Granted Patent
Utility
US 6,490,069 · App. 09/772,799
Transmission and reception of duobinary multilevel pulse-amplitude-modulated optical signals using subtraction-based encoder
Inventors:
Joseph M. Kahn, Keangpo Ricky Ho
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jan 29, 2001
Inventors
Joseph M. Kahn
Keangpo Ricky Ho
Assignee (at issue)
STRATALIGHT COMMUNICATIONS, 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.