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File:Johannes Siegmar Elster.jpg

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Deutsch: Portrait des Mainzer Ingenieurs und Fabrikant Johannes Siegmar Elster. Er war Mitbegründer der Mainzer Gasmesserfabrik Elster & Cie mit etwa 500 Mitarbeitern im Stammwerk in Mainz. Hauptprodukt war der Haas'sche Patent-Gaszähler. In allen europäischen Industriestaaten wurden Lizenzen dieses Typs genutzt, die Firma hatte in Luzern und Rotterdam Tochterfirmen.
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Source Die deutsche Industrie (1888-1913), Berlin 1913
Author Wilhelm Wendlandt (1859-1937)
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Public domain This image is from Die deutsche Industrie (1888-1913) - Festgabe zum 25jährigen Regierungs-Jubiläum seiner Majestät des Kaisers und Königs Wilhelm II. by Wilhelm Wendlandt (1859-1937), published 1913. The copyrights have expired and this image is in the public domain.
This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
Public domain

The author died in 1937, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain".
This photographic reproduction is therefore also considered to be in the public domain in the United States. In other jurisdictions, re-use of this content may be restricted; see Reuse of PD-Art photographs for details.

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current10:58, 10 November 2017Thumbnail for version as of 10:58, 10 November 2017728 × 1,105 (321 KB)Metilsteiner (talk | contribs)VicuñaUploader 1.23

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