Assignee

ERATH LOUIS W

US·1 granted patent·1 pending application·20 citations·filing 1989–2006

Technology mixH04R2

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2 records

0144US5086473AFeedback system for a sub-woofer loudspeakerERATH LOUIS W·Filed 1989·Granted Feb 4, 1992·20 cites·28 claims
0243US2007269055A1Feedback System for a Multiple Element LoudspeakerERATH LOUIS W·Filed 2006·Application pending·0 cites

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