1. Carburettor   Gottlieb Daimler   Edmund Cartwright   John J. Loud   G. Ferdinand Von Zeppelin   Hint Half-n-half Clue   2. Ball-Point Pen   Lewis E. Waterman   Z. Janssen   David Bushnell   John J. Loud   Half-n-half Clue   3. Electronic Computer   Sir Isaac Pitman   Otto   Evangelista Torricelli   Dr. Alan M. Turing   Half-n-half Clue   4. Gunpowder   Bardeen, Shockley, Brattain   Robert Wilhelm Von Bunsen   Roger Bacon   Dr. Alan M. Turing   Half-n-half Clue   5. Barometer   Johann Gutenberg   Otto   Evangelista Torricelli   Sir Frank Whittle   Half-n-half Clue   6. Transistor   Bardeen, Shockley, Brattain   G. Ferdinand Von Zeppelin   Evangelista Torricelli   Sir Frank Whittle   Half-n-half Clue   7. Rabies Vaccine   Louis Pasteur   David Bushnell   John J. Loud   John Napier   Half-n-half Clue