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Which company developed the Model 299 during the interwar years?

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  1. Douglas
  2. Curtiss
  3. Boeing

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References

  1. Journey of Flight Teacher's Guide, chapter 3 www.gocivilairpatrol.com/media/cms/2nd_edition_Teachers_Guide_5D3166D76F9B1.pdf Checked 2026-10-10.

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