Colugo systems

• https://www.calcalistech.com/ctech/articles/0,7340,L-3738991,00.html

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• https://evtol.news/colugo-systems

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• https://cordis.europa.eu/project/id/816552

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• https://www.flyingmag.com/news/video-see-new-vtol-drone-concept-fly/