"Pre-war Československá zbrojovka, akc.spol. (or a.s.) and post-war Zbrojovka Brno, n.p. was a maker of small arms, light artillery, and motor vehicles in Brno, Czechoslovakia. It ...
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also made other products and tools, such as typewriters and early computers.
In 1946, Zbrojovka started making tractors, which it branded "Zetor" ("Z-tractor"). Zetor continues to make tractors in Brno." - (en.wikipedia.org 11.08.2021)