Granted Patent
Utility
US 6,409,718 · App. 09/017,680
Device and method for correcting astigmatism by laser ablation
Inventor:
Fuqian Tang
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Feb 3, 1998
Inventor
Fuqian Tang
Assignee (at issue)
LaserSight Technologies, 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.