Granted Patent
Utility
US 4,885,638 · App. 07/188,093
Video device synchronization system
Inventor:
Phillip P. Bennett
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Apr 27, 1988
Inventor
Phillip P. Bennett
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.