Granted Patent
Utility
US 5,751,521 · App. 08/710,804
Differential spin valve sensor structure
Inventor:
Hardayal Singh Gill
Patented Case
View Patent ↗
Granted: May 12, 1998
Filed: Sep 23, 1996
Inventor
Hardayal Singh Gill
Assignee (at issue)
International Business Machines 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.