in which year helicopter was invented?
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Answered by
1
14 September 1939
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Hope it help u
Thanks
If it help u so mark it
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kumar143:
nice answer
can you say by whom
I THINK built by the Vought-Sikorsky Aircraft Division of the United Aircraft Corporation,
no briquit
Hey what
nothing
I m confused
Answered by
1
On September 14, 1939, year helicopter was invented
plz maekas brainliest
plz maekas brainliest
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