Granted Patent
Utility
US 5,877,571 · App. 08/960,661
Head disk assembly having a washer between a disk clamp and disk and method of making
Inventor:
Peter E. Brooks
Patented Case
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Granted: Mar 2, 1999
Filed: Oct 30, 1997
Inventor
Peter E. Brooks
Assignee (at issue)
Western Digital
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.