Granted Patent
Utility
US 6,133,663 · App. 09/285,155
Brushless permanent magnet machine
Inventor:
Keith I. Hoemann
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Apr 1, 1999
Inventor
Keith I. Hoemann
Assignee (at issue)
A. O. Smith Corporation
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.