Granted Patent
Utility
US 6,676,889 · App. 10/143,294
Modular furnace emission remediation system
Inventors:
Hans M. Wenghoefer, John R. Martin, Sheridan A. Glen, James F. Corbett, Richard J. Geier
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: May 10, 2002
Inventors
Hans M. Wenghoefer
John R. Martin
Sheridan A. Glen
James F. Corbett
Richard J. Geier
Assignee (at issue)
Thermo-Stack L.L.C.
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.