ALEXANDRIA, Va., Oct. 6 -- United States Patent no. D1,151,548, issued on Oct. 6, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Microphone device" was invented by David M. Blomberg (Lino Lakes, Minn.), Henning T. Urban (Kuehlungsborn, Germany) and Patrick S. Bowden (Santa Monica, Calif.).
The patent was filed on May 13, 2024, under Application No. D/941,997.
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