1. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

2. Who invented Laser ?

Answer:

Charles H. Townes

3. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

4. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

5. Who invented Machine Gun ?

Answer:

Helge Palmcrantz, Swedish inventor and industrialist

6. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

7. Who invented google ?

Answer:

Larry Page