Granted Patent
Utility
US 6,570,649 · App. 09/820,725
Optical fiber characteristics measuring device and optical fiber characteristics measuring method
Inventor:
Yoshiyuki Sakairi
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Mar 30, 2001
Inventor
Yoshiyuki Sakairi
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.