Granted Patent
Utility
US 6,744,495 · App. 10/226,928
WDM measurement system
Inventor:
Tao Yu
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Aug 22, 2002
Inventor
Tao Yu
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.