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French Inventors Develop Active Sound Attenuation Device
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US Fed News Service, Including US State News; Jul 26, 2007; 537 Words
...device. According to the U.S. Patent & Trademark...inventors were issued U.S. Patent No. 7,248...Aubagne, France, and Aldes Aeraulique, Venissieux. The original...786-9199 (in the U.S. or Canada) or 703/308...
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