Given the question: Facts: - death place: bratislava - caption: inventor - death date: 13 march 1916 - spouse: rozalia schwanzerova - children: frida , wilhelmina , gustav - birth date: 25 may 1856 - name: jan bahyl - image size: 180px - image: bahily janos.jpg - birth place: zvolenska slatina , kingdom of hungary - occupation: inventor Based on these bullet points, write a short biography describing the life of jan bahyl .
The answer is:
jan bahyl -lrb- 25 may 1856 -- 13 march 1916 -rrb- 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 .