Granted Patent
Utility
US 6,164,412 · App. 09/285,546
Muffler
Inventor:
James R. Allman
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Apr 2, 1999
Inventor
James R. Allman
Assignee (at issue)
Arvin Industries, Inc.
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.