The Curtiss Model 75 aiva private asingashumbi nokuda kambani, yakagadzirwa ne vaimbova Northrop Aircraft Company injiniya Don R. Berlin. The zvikabva zvaita, yakavakwa muna 1934, airatidzwa zvose-metal kuvakwa pamwe jira akafukidza kudzora hukawanika, mumwe Wright XR-1670-5 radial injini kutanga 900 hp (670 kW), uye zvakajairika United States Army Air Corps zvombo mumwe.30 mu (7.62 mm) uye mumwe.50 mu (12.7 mm) pfuti pfuti kupfura kuburikidza propeller arc.
Muna 1934