Granted Patent
Utility
US 6,661,521 · App. 09/151,765
Diffuse surface illumination apparatus and methods
Inventor:
Howard Stern
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Sep 11, 1998
Inventor
Howard Stern
Assignee (at issue)
Robotic Vision Systems, 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.