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Post Info TOPIC: Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft


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Posts: 3381
Date: Jan 22, 2012
Alberto Alvarez Calderon F. 3-rotor twin-boom VTOL aircraft
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Found by Tophe:

http://www.google.com/patents/US20110031355?printsec=drawing&ei=uHsXT9yAApD-8QOJqfjmAg#v=onepage&q&f=false



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Brony rotorhead
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