Granted Patent
Utility
US 6,804,432 · App. 10/272,781
Optical add-drop multiplexer
Inventor:
Shu-Lin Tai
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Oct 16, 2002
Inventor
Shu-Lin Tai
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.