Granted Patent
Utility
US 5,983,840 · App. 09/153,846
Steam generator with integrated dust separator
Inventors:
Oliver Riccius, Georg Ziegler
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Sep 16, 1998
Inventors
Oliver Riccius
Georg Ziegler
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.