Granted Patent
Utility
US 6,604,872 · App. 10/205,134
Method and apparatus for improving spectral efficiency in fiber-optic communication systems
Inventors:
Andrej B. Puc, Alexei N. Pilipetskii
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Jul 25, 2002
Inventors
Andrej B. Puc
Alexei N. Pilipetskii
Assignee (at issue)
Tyco Telecommunications (US) 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.