Granted Patent
Utility
US 6,563,976 · App. 09/568,220
Cost-effective wavelength division multiplexer and demultiplexer
Inventors:
Eric B. Grann, Yung-Chieh Hsieh
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: May 9, 2000
Inventors
Eric B. Grann
Yung-Chieh Hsieh
Assignee (at issue)
Blaze Network Products, Inc.
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.