Ferrofluid speaker
Description
The broken lines shown in the drawings illustrate portions of the ferrofluid speaker that form no part of the claimed design.
Claims
The ornamental design for a ferrofluid speaker, as shown and described.
Referenced Cited
U.S. Patent Documents
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| D880447 | April 7, 2020 | Chen |
| D913987 | March 23, 2021 | Li |
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Patent History
Patent number: D1044765
Type: Grant
Filed: Apr 12, 2023
Date of Patent: Oct 1, 2024
Inventors: Chunjie Zhang (Guangzhou), Yunqin Xu (Guangzhou)
Primary Examiner: Khawaja Anwar
Assistant Examiner: Megan Tiana Rakos
Application Number: 29/874,020
Type: Grant
Filed: Apr 12, 2023
Date of Patent: Oct 1, 2024
Inventors: Chunjie Zhang (Guangzhou), Yunqin Xu (Guangzhou)
Primary Examiner: Khawaja Anwar
Assistant Examiner: Megan Tiana Rakos
Application Number: 29/874,020
Classifications
Current U.S. Class:
Speaker Or Housing Therefor (10) (D14/204)