Photograph of the first automatic telephone exchange system (modern telephone), installed by the German Post Office in 1909. The original caption explained: 'Each subscriber is his own exchange, moving the clocklike face of the telephone until the right sequence of numbers has been called.'
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Details
Creative#:
TOP23730390
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
No
Property Release:
No
Right to Privacy:
No
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