Granted Patent
Utility
US 6,664,704 · App. 10/273,238
Electrical machine
Inventor:
David G. Calley
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Oct 17, 2002
Inventor
David G. Calley
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.