johnyholiday Posted July 15, 2006 Share Posted July 15, 2006 http://www.freepatentsonline.com/4031318.pdf http://www.freepatentsonline.com/4390078.pdf http://www.freepatentsonline.com/4771466.pdf Quote Link to comment Share on other sites More sharing options...
Guest " " Posted July 15, 2006 Share Posted July 15, 2006 Very unusual. Kinda looks like a combo of direct reflection and horn approaches. Quote Link to comment Share on other sites More sharing options...
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