File:AT&T coaxial trunkline 1949.jpg
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![File:AT&T coaxial trunkline 1949.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/AT%26T_coaxial_trunkline_1949.jpg/593px-AT%26T_coaxial_trunkline_1949.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:58, 2 May 2021 | ![]() | 657 × 664 (199 KB) | commons>Materialscientist | FFT |
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