Date of Birth: 
Place of Birth: Zvolenská Slatina, Banská Bystrica Region, Slovakia
About Ján Bahýľ
- Ján Bahýl (25 May 1856 – 13 March 1916) was a Slovak inventor and engineer.
- He specialised in military science, military construction, and engineering.
- Flying machines were a particular interest of his.
- In 1895, he was granted a patent on the helicopter.
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