DN

Donald J. North

📍 Los Angeles, CA: #1,398 of 12,377 inventorsTop 15%
🗺 California: #66,801 of 386,348 inventorsTop 20%
Overall (All Time): #572,498 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
9369817 Broad sound field loudspeaker system Dennis Barnes, Thomas Richard Farr 2016-06-14
9288601 Broad sound loudspeaker system 2016-03-15
9197963 Broad sound field loudspeaker system 2015-11-24
8804995 Low profile loudspeaker 2014-08-12
8571252 Driver assembly for loudspeakers Thomas Richard Farr 2013-10-29
8175304 Compact loudspeaker system 2012-05-08
8155372 Wire suspension for speakers 2012-04-10
6801631 Speaker system with multiple transducers positioned in a plane for optimum acoustic radiation pattern 2004-10-05
6636612 Speaker for use in confined spaces Dai Zo Lee 2003-10-21