Granted Patent
Utility
US 5,147,165 · App. 07/768,230
Centrifugal spindle
Inventor:
Michael C. Tempest
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Oct 18, 1991
Inventor
Michael C. Tempest
Assignee (at issue)
Federal Mogul Westwind Air Bearings Ltd.
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.