Granted Patent
Utility
US 4,894,987 · App. 07/234,261
Stamp formed muffler and catalytic converter assembly
Inventors:
Jon W. Harwood, Michael Clegg, Bruno A. Rosa
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Aug 19, 1988
Inventors
Jon W. Harwood
Michael Clegg
Bruno A. Rosa
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.