Granted Patent
Utility
US 4,356,523 · App. 06/157,767
Narrow track magnetoresistive transducer assembly
Inventor:
Nan-Hsiung Yeh
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jun 9, 1980
Inventor
Nan-Hsiung Yeh
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.