Granted Patent
Utility
US 6,535,613 · App. 09/473,895
Air flow control device for loudspeaker
Inventor:
Jason A. Ssutu
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Dec 28, 1999
Inventor
Jason A. Ssutu
Assignee (at issue)
JL Audio, 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.