Granted Patent
Utility
US 6,826,322 · App. 09/946,827
Astigmatism correcting optical coupler
Inventor:
Xiaofeng Han
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Sep 4, 2001
Inventor
Xiaofeng Han
Assignee (at issue)
Agility Communications, 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.