Granted Patent
Utility
US 5,656,912 · App. 08/536,980
Method and apparatus for controlling a motor
Inventor:
Sheng-Ming Yang
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Sep 29, 1995
Inventor
Sheng-Ming Yang
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.