File:De Bothezat Quadrotor.jpg

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De_Bothezat_Quadrotor.jpg(592 × 242 像素,檔案大小:88 KB,MIME 類型:image/jpeg


摘要

描述
English: Helicopter designed by George De Bothezat, making descent at McCook Field after remaining airborne for two minutes, 45 seconds.
日期
來源 Edison National Historic Site archives {04.300/02}
作者 National Park Service

授權條款

Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.


原始上傳日誌

The original description page was here. All following user names refer to en.wikipedia.
  • 2008-06-02 03:46 Tillman 592×242× (90449 bytes) Helicopter designed by George De Bothezat, making descent at McCook Field after remaining airborne for two minutes, 45 seconds.; February 21, 1923; {04.300/02} Source: [[Edison National Historic Site]] archives URL: http://www.nps.gov/archive/edis/edis

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21 2 1923格里曆

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目前2011年5月23日 (一) 01:01於 2011年5月23日 (一) 01:01 版本的縮圖592 × 242(88 KB)TFCforever== {{int:filedesc}} == {{Information |Description={{en|Helicopter designed by George De Bothezat, making descent at McCook Field after remaining airborne for two minutes, 45 seconds.}} |Source=[[:en:Edison National Historic Site|Edison National Histori

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