Granted Patent
Utility
US 6,678,440 · App. 09/912,423
Optic fibre multiplexer-demultiplexer with flattened response
Inventor:
Philippe Martin
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Jul 26, 2001
Inventor
Philippe Martin
Assignee (at issue)
Cabinet Harle & Phelip
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.