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20-April-2014 Sunday
On this day in 1735, Ivan Petrovich Kulibin was born, a self-taught mechanic who created searchlights, a semaphore telegraph and arched bridges.


BlackLightning
 
On this day in 1735, Ivan Petrovich Kulibin was born, a self-taught mechanic who created searchlights, a semaphore telegraph and arched bridges.
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Birthday Ivan Kulibin
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