Granted Patent
Utility
US 6,422,837 · App. 09/532,488
Magnetic bearing protection device
Inventor:
Miyako Komoriya
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Mar 22, 2000
Inventor
Miyako Komoriya
Assignee (at issue)
SEIKO INSTRUMENTS 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.