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File:Davinci-valve-flush.jpg

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Leonardo's fake sketch of the first known depiction of a valve flush toilet; via Anthony Ravielli from Codex Madrid I, a page allegedly discovered in 1975. April Fool's joke by Martin Gardner, in Scientific American (April 1975). See also: [1], [2], [3]

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Date/TimeThumbnailDimensionsUserComment
current11:01, 1 April 2005Thumbnail for version as of 11:01, 1 April 20051,002 × 846 (121 KB)Sj (talk | contribs)Leonardo sketch of valve flush toilet (note paper holder in background)

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