File:US390721.png

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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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The author died in 1943, 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, 1931.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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Date/TimeThumbnailDimensionsUserComment
current23:59, 11 May 2025Thumbnail for version as of 23:59, 11 May 20251,736 × 2,715 (491 KB)JayCubbyCropped 25 % horizontally, 20 % vertically, 40 % areawise, rotated -1.5° using CropTool with precise mode.
23:04, 10 May 2025Thumbnail for version as of 23:04, 10 May 20252,320 × 3,408 (93 KB)JayCubbyhigher res from same source. Will crop in a sec.
06:02, 10 March 2007Thumbnail for version as of 06:02, 10 March 2007516 × 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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