ALEXANDRIA, Va., Aug. 26 -- United States Patent no. D1,090,849, issued on Aug. 26, was assigned to SOUNDUCT (Strasbourg, France).
"Hearing aid" was invented by Jean-Philippe Marie De Chastenay (Paris) and Gautier Coulon (Saint-Die, France).
The patent was filed on April 15, 2024, under Application No. D/937,445.
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