Granted Patent
Utility
US 4,760,894 · App. 07/061,876
Exhaust muffler with angularly aligned inlets and outlets
Inventors:
Jon W. Harwood, James W. Emrick, Bruno A. Rosa, Bruce G. Kratzer
Patented Case
View Patent ↗
Granted: Aug 2, 1988
Filed: Jun 11, 1987
Inventors
Jon W. Harwood
James W. Emrick
Bruno A. Rosa
Bruce G. Kratzer
Assignee (at issue)
AP 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.