Granted Patent
Utility
US 6,040,988 · App. 09/139,125
Converter with DC voltage intermediate circuit and method for operating such a converter
Inventors:
Jochen Rees, Jurgen Steinke
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Aug 25, 1998
Inventors
Jochen Rees
Jurgen Steinke
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.