Granted Patent
Utility
US 5,879,578 · App. 08/820,395
Etched/lubricated swage balls for use in DASD suspension-arm attachment
Inventors:
Gwendolyn Jones Chung, Ramamurthy Nagarajan, Stephen A. O. Olson, Robert Bruce Prime, Dennis Ramos, Hoa-Binh Thi Tu
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Mar 12, 1997
Inventors
Gwendolyn Jones Chung
Ramamurthy Nagarajan
Stephen A. O. Olson
Robert Bruce Prime
Dennis Ramos
Hoa-Binh Thi Tu
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.