Granted Patent
Utility
US 5,739,652 · App. 08/770,862
Method and apparatus for sensorless operation of brushless permanent magnet motors
Inventor:
Tillasthanam V. Sriram
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Dec 20, 1996
Inventor
Tillasthanam V. Sriram
Assignee (at issue)
General Motors LLC
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.