Granted Patent
Utility
US 5,075,280 · App. 07/265,620
Thin film magnetic head with improved flux concentration for high density recording/playback utilizing superconductors
Inventors:
Raghavan K. Pisharody, Sidney D. Miller, Beverley R. Gooch, David A. Petersen
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Nov 1, 1988
Inventors
Raghavan K. Pisharody
Sidney D. Miller
Beverley R. Gooch
David A. Petersen
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.