Granted Patent
Utility
US 4,587,578 · App. 06/483,314
Directional control for tape reel
Inventor:
Stephen R. desJardins
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Apr 8, 1983
Inventor
Stephen R. desJardins
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.