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| Exchange equipment from Strowger in the 1930's, Siemens, Rotary, plus Ericsson (ARF, ARD, AKD) |  |
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| Total images: 89 | Help |
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| Exchange equipment from Strowger in the 1930's, Siemens, Rotary, plus Ericsson (ARF, ARD, AKD) | |
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| Total images: 89 | Help |