ALEXANDRIA, Va., July 28 -- United States Patent no. D1,137,187, issued on July 28, was assigned to ADAM Audio GmbH (Berlin).
"Headphone" was invented by Christian Hellinger (Berlin), Andrew Goldberg (Espoo, Finland), Niklas Galler (Berlin), Niko Christopher Mergenthaler (Berlin), Jonas Darley (Berlin) and Felix Michael Binder (Berlin).
The patent was filed on Nov. 21, 2024, under Application No. D/974,319.
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