Granted Patent
Utility
US 6,243,085 · App. 08/173,431
Perspective switching in audiovisual works
Inventor:
Richard Gregory Roach
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Dec 27, 1993
Inventor
Richard Gregory Roach
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.