Granted Patent
Utility
US 5,666,013 · App. 08/158,900
Magnetic bearing
Inventor:
Takeshi Mizuno
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Nov 29, 1993
Inventor
Takeshi Mizuno
Assignee (at issue)
Seiko Seiki Kabushiki Kaisha
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.