File:Edward Kellogg & Chester Rice with cone speaker 1925.jpg
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![File:Edward Kellogg & Chester Rice with cone speaker 1925.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Edward_Kellogg_%26_Chester_Rice_with_cone_speaker_1925.jpg/800px-Edward_Kellogg_%26_Chester_Rice_with_cone_speaker_1925.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:00, 3 May 2021 | ![]() | 935 × 603 (360 KB) | commons>Materialscientist | FFT |
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