Granted Patent
Utility
US 5,189,572 · App. 06/843,453
Magnetic control of a transducer signal transfer zone to effect tracking of a path along a record medium
Inventor:
Beverley R. Gooch
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Mar 24, 1986
Inventor
Beverley R. Gooch
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.