1. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

2. Who invented Diesel Engine ?

Answer: Rudoff Diesel of Germany in 1895

3. Who invented Printing Press ?

Answer:

Johannes Gutenberg

4. Who invented Laser ?

Answer:

Charles H. Townes

5. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

6. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

7. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.