Granted Patent
Utility
US 6,667,861 · App. 09/906,659
Dual/differential GMR head with a single AFM layer
Inventor:
Hardayal Singh Gill
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Jul 16, 2001
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.