Granted Patent
Utility
US 5,833,374 · App. 08/858,230
Rotatable assembly for supporting of the rotor of a vacuum pump
Inventor:
Fausto Casaro
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: May 19, 1997
Inventor
Fausto Casaro
Assignee (at issue)
Varian, Inc.
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.