File:Junker Patentschrift 613176-1931.jpg

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Deutsch: Erste Patentschrift für die Ausführung einer Morsetaste nach Kap. J. Junker von 1931
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Source Privatarchiv
Author Reichspatentamt Berlin

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Public domain This image is in the public domain according to German copyright law because it is part of a statute, ordinance, official decree or judgment (official work) issued by a German authority or court (§ 5 Abs.1 UrhG).

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current10:30, 2 January 2020Thumbnail for version as of 10:30, 2 January 20202,193 × 3,249 (4.6 MB)OldfashionFreak (talk | contribs){{Information |description ={{de|1=Erste Patentschrift für die Ausführung einer Morsetaste nach Kap. J. Junker von 1931}} |date =1931 |source =Privatarchiv |author =Reichspatentamt Berlin }}

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