Sound amplifier
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The broken lines shown in
Claims
The ornamental design for a sound amplifier, as shown and described.
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Type: Grant
Filed: Aug 22, 2018
Date of Patent: Apr 14, 2020
Assignee: Sennheiser electronic GmbH & Co. KG (Wedemark)
Inventors: Oliver Berger (Zürich), Iwan Hänggi (Zürich)
Primary Examiner: Katie Jane Stofko
Application Number: 29/660,769