3479270 Berliner\'s central communtator, 1890; (add.info.: Berliner\'s central communtator, based on Schweitzer\'s apparatus used to serve 25 telephone subscribers. Dated 1890.); Universal History Archive/UIG; out of copyright.
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TOP27536276
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達志影像
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19thcentury19centuryXIXcenturyXIXthcenturyBerlinGermanygermangermanseuropeanunionEUEuropeeuropeancommunicationcommunicationselectricityelectricelectriciteelectricaltelephonesubscribersschweitzer1890selectriccentralcommuntatorapparatuselectricalsubscribers19thcenturyelectricitytelephonecommunicationberlinschweitzerelectriccentralcommuntatorapparatuselectricalsubscribers19thcenturyelectricitytelephonecommunicationberlinschweitzer
1890s1919th19th19thBerlinEUEuropeGermanyXIXXIXthapparatusapparatusberlinberlincentralcentralcenturycenturycenturycenturycenturycenturycommunicationcommunicationcommunicationcommunicationscommuntatorcommuntatorelectricelectricelectricelectricalelectricalelectricalelectriciteelectricityelectricityelectricityeuropeaneuropeangermangermansschweitzerschweitzerschweitzersubscriberssubscriberssubscriberstelephonetelephonetelephoneunion
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