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The "Self Contained Ion Powered Aircraft" covered under US Patent N0. 10,119,527. Is the only heavier than air ion propelled aircraft that carries its power supply onboard without external assistance. A large number of working models have been made of it since 2006, with the power supply onboard the craft. There are also lots of official eye witnesses named online. You can see 5 different models of the invention in flight lifting their own power supplies before the MIT device, as well as the w