Granted Patent
Utility
US 6,750,443 · App. 10/036,274
Variable optical attenuator having a splitter to monitor light signals
Inventors:
Tai-Cheng Yu, Yao-Hao Chang
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Dec 24, 2001
Inventors
Tai-Cheng Yu
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.