Granted Patent
Utility
US 4,163,993 · App. 05/889,451
Continuous slow motion automatic tracking system
Inventor:
Raymond F. Ravizza
Patented Case
View Patent ↗
Granted: Aug 7, 1979
Filed: Mar 23, 1978
Inventor
Raymond F. Ravizza
Assignee (at issue)
Ampex Corporation
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.