Eric B. Hall and the special hang glider
Posted: Sat Nov 05, 2022 8:34 pm- TandemWingHG450.jpg (16.44 KiB) Viewed 584 times
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Eric B. Hall filed a patent for a hang glider. That hang glider could be studied, explored, discussed.
http://www.energykitesystems.net/Lift/2 ... index.html
US4336913EricBHallCompounWingAircraft.pdf- (444.44 KiB) Downloaded 110 times