Granted Patent
Utility
US 6,652,046 · App. 09/930,731
Loudspeaker box arrangement and method for the positional adjustment of individual loudspeaker boxes therein
Inventor:
Matthias Christner
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Aug 15, 2001
Inventor
Matthias Christner
Assignee (at issue)
d&b audiotechnik GmbH
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.