Granted Patent
Utility
US 5,988,846 · App. 08/869,891
Method of operating a drive system and device for carrying out the method
Inventors:
Heinz Flamm, Franz Furrer, Reinhold Güth
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Jun 5, 1997
Inventors
Heinz Flamm
Franz Furrer
Reinhold Güth
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.