Granted Patent
Utility
US 5,990,896 · App. 08/723,018
Rapid and efficient terrain surface finding system
Inventor:
John W. Barrus
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Sep 30, 1996
Inventor
John W. Barrus
Assignee (at issue)
Mitsubishi Electric Information Technology Center America, Inc. (ITA)
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.