Granted Patent
Utility
US 4,860,853 · App. 07/287,391
Stamp formed muffler with nonplanar array of tubes
Inventor:
Walter G. Moring, III
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Dec 20, 1988
Inventor
Walter G. Moring, III
Assignee (at issue)
AP Parts Manufacturing Company
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.