Granted Patent
Utility
US 5,589,980 · App. 08/256,402
Three dimensional optical viewing system
Inventors:
Robert Bass, John Bass
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Jun 23, 1994
Inventors
Robert Bass
John Bass
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.