1. Ball-Point Pen   Robert Wilhelm Von Bunsen   John J. Loud   Louis Pasteur   Edmund Cartwright   Hint Half-n-half Clue   2. Logarithmic Tables   Dr. Alan M. Turing   Dr. William Stokes, Rene Laennec   John Napier   Bardeen, Shockley, Brattain   Half-n-half Clue   3. Rabies Vaccine   Karl Benz   G. Ferdinand Von Zeppelin   Otto   Louis Pasteur   Half-n-half Clue   4. Electronic Computer   Otto   John Napier   Dr. Alan M. Turing   Karl Benz   Half-n-half Clue   5. Jet Engine   Sir Frank Whittle   John Napier   Louis Pasteur   Dr. William Stokes, Rene Laennec   Half-n-half Clue   6. Bicycle   Dr. William Stokes, Rene Laennec   Bardeen, Shockley, Brattain   Kirkpatrick Macmillan   Otto   Half-n-half Clue   7. Printing Press   Johann Gutenberg   Kirkpatrick Macmillan   Lewis E. Waterman   John J. Loud   Half-n-half Clue