Image: Siemens Hefner-Alteneck Dynamomaschine
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Description: Siemens Hefner-Altenecksche Dynamomaschine
Title: Siemens Hefner-Alteneck Dynamomaschine
Credit: Bibliothek allgemeinen und praktischen Wissens für Militäranwärter Band III, 1905 / Deutsches Verlaghaus Bong & Co Berlin * Leipzig * Wien * Stuttgart
Author: Scan made by Kogo
Permission: Public Domain, because copyright expired
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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