Figs.4,5 & 6. N.A.C.A. T3chnical Memorandum No.407 I'ig.4 Built-up steel box struts of the type used, in the Dyle and Bacalan DBIO. Fig.5 Details of the Fiat wing spars. … Fig.6 Boss of forged duralumin propeller, Comte patent.
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