Granted Patent
Utility
US 6,390,231 · App. 09/850,974
Loudspeaker with directed airflow cooling
Inventor:
Bruce Howze
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: May 8, 2001
Inventor
Bruce Howze
Assignee (at issue)
Community Professional Loudspeakers
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.