Granted Patent
Utility
US 6,403,890 · App. 09/618,330
Magnet wire insulation for inverter duty motors
Inventors:
Charles W. McGregor, Joseph J. Harber, James J. Connell, Ronald J. Beeckman
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Jul 18, 2000
Inventors
Charles W. McGregor
Joseph J. Harber
James J. Connell
Ronald J. Beeckman
Assignee (at issue)
Essex Group 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.