Crowder 1941 Twin-Prop Tail-Sitter VTOL Patent (US 2328786)

W

Wingknut

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Hi folks,
Hope this isn't old news but here's one for you Triebflugel / tail-sitting VTOL fans: a VTOL patent from one Wiley K. Crowder, with twin contra-rotating propellers but (basically) no wings - filed March 29th 1941.
Link here: https://www.google.com/patents/US2328786
Cheers, 'Wingknut'.
 

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