Granted Patent
Utility
US 6,696,389 · App. 09/392,648
Process and apparatus for cleaning a gas flow
Inventors:
Walter Boegner, Rolf-Dirc Roitzheim, Martin Hartweg, Andrea Seibold, Thomas Fetzer, Bernd Morsbach
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Sep 9, 1999
Inventors
Walter Boegner
Rolf-Dirc Roitzheim
Martin Hartweg
Andrea Seibold
Thomas Fetzer
Bernd Morsbach
Assignee (at issue)
Daimlerchrysler AG
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.