Karl F. M. Roesner Patent

hesham

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Hi,

here is a patent for Karl F. M. Roesner from Gotha-Germany,it was about
folded landing gear as I guess ?.

http://www.avia-it.com/act/biblioteca/periodici/PDF%20Riviste/Ala%20d'Italia/L'ALA%20D'ITALIA%201926%2008.pdf
 

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