Dosya:US390721.png - Vikipedi

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en:Image:US390721.png 以下は元のファイルの記述 Electric system U.S. Patent 390,721, patent by Nikola Tesla (10 July 1856 – 7 January 1943), United States.

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 In general, the contents of United States patents are in the public domain.

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güncel06.02, 10 Mart 200706.02, 10 Mart 2007 tarihindeki sürümün küçültülmüş hâli516 × 806 (51 KB)Penpen~commonswikien:Image:US390721.png 以下は元のファイルの記述 Electric system {{US patent|390721}} {{PD-US-patent}} {{PD-old-50}}

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