Granted Patent
Utility
US 4,208,680 · App. 05/874,440
Real time magnetic video digital recording and reproducing apparatus
Inventor:
Daniel A. Beaulier
Patented Case
View Patent ↗
Granted: Jun 17, 1980
Filed: Feb 2, 1978
Inventor
Daniel A. Beaulier
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.