Granted Patent
Utility
US 5,589,822 · App. 08/357,875
System for detecting ice or snow on surface which specularly reflects light
Inventor:
Howard Stern
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Dec 16, 1994
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.