Granted Patent
Utility
US 4,657,393 · App. 06/708,156
Pattern optimization when measuring depth to a surface using lens focusing
Inventor:
Howard Stern
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Mar 4, 1985
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.