Granted Patent
Utility
US 6,257,367 · App. 09/264,233
Stamp-formed muffler
Inventor:
James R. Allman
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Mar 5, 1999
Inventor
James R. Allman
Assignee (at issue)
ArvinMeritor GmbH
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.