Granted Patent
Utility
US 5,016,728 · App. 07/491,514
Air intake noise suppressor
Inventor:
Dennis Zulawski
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Mar 12, 1990
Inventor
Dennis Zulawski
Assignee (at issue)
Arctco, 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.