Granted Patent
Utility
US 5,883,448 · App. 08/962,687
Gas-cooled electric machine
Inventor:
Hans Zimmerman
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Nov 3, 1997
Inventor
Hans Zimmerman
Assignee (at issue)
Asea Brown Boveri, S.A.
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.