Granted Patent
Utility
US 6,173,234 · App. 09/129,976
Axial bearing fly-height measurement to detect oil deficiency
Inventor:
Chen-Hsiung Lee
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Aug 5, 1998
Inventor
Chen-Hsiung Lee
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.