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To be sure: 2 down, 165 to go[1]. [1] https://en.wikipedia.org/wiki/Category:Aircraft_manufacturers_of_the_United_States https://en.wikipedia.org/wiki/Category

• azernik 9y ago
  Did a bit of not-super-random sampling; the only ones I'm seeing that don't produce for the military are kitplane manufacturers and this lovely oddity: https://en.wikipedia.org/wiki/Terrafugia https://en.wikipedia.org/wiki/Terrafugia (And of those kitplane manufacturers, many of them also make drones for the Army and Navy.) There is just so much overlap between civilian and military models (much more so than in, say motor vehicles) that the line between military and civilian products gets fuzzy.