Granted Patent
Utility
US 6,816,635 · App. 10/326,614
Optical waveguide phase shifter
Inventors:
Axel Klekamp, Henning Bulow
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Dec 23, 2002
Inventors
Axel Klekamp
Henning Bulow
Assignee (at issue)
Avanex Corporation
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.