Granted Patent
Utility
US 6,707,979 · App. 10/035,551
Optical loop-back attenuator
Inventors:
Chung-Chih Wang, Yao-Hao Chang
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Dec 27, 2001
Inventors
Chung-Chih Wang
Yao-Hao Chang
Assignee (at issue)
Hon Hai Precision Ind. 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.