Granted Patent
Utility
US 5,838,239 · App. 08/712,059
System for detecting ice or snow on surface which specularly reflects light
Inventors:
Howard Stern, John Schaefer, Fereydoun Maali
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Sep 10, 1996
Inventors
Howard Stern
John Schaefer
Fereydoun Maali
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.