Granted Patent
Utility
US 4,620,607 · App. 06/640,025
Air silencer for an internal combustion engine
Inventors:
Paul W. Breckenfeld, George Broughton, James E. Macier, Ronald E. Gibbs
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Aug 9, 1984
Inventors
Paul W. Breckenfeld
George Broughton
James E. Macier
Ronald E. Gibbs
Assignee (at issue)
Outboard Marine Corporation
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.