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  • 21 Aug, 2019

  • By, Wikipedia

File:HE2G8.jpg

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  • 2007-01-04 21:14 Signaleer 504×157×??? (27573 bytes) In 1907, the French inventor Paul Cornu made a helicopter that used two 20-foot (6-meter) counter-rotating rotors driven by a 24-hp (18-kW) Antoinette engine. It lifted its inventor to about five feet (1.5 meters) and remained aloft one minute. ==Source=

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Date/TimeThumbnailDimensionsUserComment
current07:27, 25 February 2023Thumbnail for version as of 07:27, 25 February 2023984 × 623 (376 KB)FOX 52wider view
14:06, 26 August 2008Thumbnail for version as of 14:06, 26 August 2008504 × 157 (27 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|In 1907, the French inventor en:Paul Cornu made a helicopter that used two 20-foot (6-meter) counter-rotating rotors driven by a 24-hp (18-kW) Antoinette engine. It lifted its invento
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