Granted Patent
Utility
US 5,894,378 · App. 08/977,908
Crash stop shock ring for the protection of disk drive motor bearings
Inventors:
Akihiko Aoyagi, Zine-Eddine Boutaghou, Vijayeshwar D. Khanna, Suresh Kumar, Muthuthamby Sri-Jayantha
Patented Case
View Patent ↗
Granted: Apr 13, 1999
Filed: Nov 25, 1997
Inventors
Akihiko Aoyagi
Zine-Eddine Boutaghou
Vijayeshwar D. Khanna
Suresh Kumar
Muthuthamby Sri-Jayantha
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.