Image:De Bothezat Quadrotor.jpg

From Wikipedia, the free encyclopedia

• Image
• File history
• File links

No higher resolution available.
De_Bothezat_Quadrotor.jpg‎ (592 × 242 pixels, file size: 88 KB, MIME type: image/jpeg)

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/edisonia/graphics/04300002.jpg

[edit] License

This article or image contains material based on a work of a National Park Service employee, created during the course of the person's official duties. As a work of the U.S. federal government, such work is in the public domain. See the NPS website and NPS copyright policy for more information. Note that not all images on NPS websites are in the public domain. Please be sure that this template is only used for images that are not attributed to a copyright holder.

File history

Click on a date/time to view the file as it appeared at that time.

• Search for duplicate files
• Edit this file using an external application

  See the setup instructions for more information.

File links