Granted Patent
Utility
US 5,757,946 · App. 08/717,608
Magnetic fluid loudspeaker assembly with ported enclosure
Inventor:
Andre John Van Schyndel
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Sep 23, 1996
Inventor
Andre John Van Schyndel
Assignee (at issue)
Nortel Networks Limited
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.