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From l'Aeronautique 1932,
here is a strange patent to Aircraft Improvement Corp. for a mono-bi-
plane aircraft,the design for biplane can change it configuration into a monoplane by folding the lower wing,such as a Russian design,also the
upper wing had a strange slender tip !.
I don't know if that company was from USA or not ?.
here is a strange patent to Aircraft Improvement Corp. for a mono-bi-
plane aircraft,the design for biplane can change it configuration into a monoplane by folding the lower wing,such as a Russian design,also the
upper wing had a strange slender tip !.
I don't know if that company was from USA or not ?.
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