Granted Patent
Utility
US 4,595,868 · App. 06/707,161
Phase detector control for a servo system
Inventor:
Kenneth Louth
Patented Case
View Patent ↗
Granted: Jun 17, 1986
Filed: Feb 27, 1985
Inventor
Kenneth Louth
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.