Granted Patent
Utility
US 5,714,821 · App. 08/197,072
Alternating current generator with direct connected exciter winding
Inventor:
William B. Dittman
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Feb 16, 1994
Inventor
William B. Dittman
Assignee (at issue)
Marathon Electric Manufacturing Corportion
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.