Granted Patent
Utility
US 5,820,832 · App. 08/857,968
Plate-type catalytic converter
Inventors:
Klaus Huttenhofer, Josef-Konrad Beer, Heimo Friede, Hendrik Lammers
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: May 16, 1997
Inventors
Klaus Huttenhofer
Josef-Konrad Beer
Heimo Friede
Hendrik Lammers
Assignee (at issue)
Siemens Aktiengesellschaft
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.