Granted Patent
Utility
US 4,661,941 · App. 06/076,752
Optical video or data tape record and playback apparatus
Inventors:
Alan E. Bell, Fred W. Spong
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Sep 18, 1979
Inventors
Alan E. Bell
Fred W. Spong
Assignee (at issue)
RCA 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.