Granted Patent
Utility
US 6,643,603 · App. 10/050,811
Chromatic dispersion distribution measurement apparatus and method for the same
Inventors:
Shoichi Aoki, Akio Ichikawa
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Jan 18, 2002
Inventors
Shoichi Aoki
Akio Ichikawa
Assignee (at issue)
Ando Electric Co., Ltd.
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.