1. Ball-Point Pen   Gottlieb Daimler   Z. Janssen   Robert Wilhelm Von Bunsen   John J. Loud   Hint Half-n-half Clue   2. Electronic Computer   Louis Pasteur   Dr. Alan M. Turing   Leo H Baekeland   Dr. William Stokes, Rene Laennec   Half-n-half Clue   3. Submarine   Dr. Alan M. Turing   Gottlieb Daimler   David Bushnell   Louis Pasteur   Half-n-half Clue   4. Microscope   Z. Janssen   Kirkpatrick Macmillan   Leo H Baekeland   David Bushnell   Half-n-half Clue   5. Transistor   Dr. Alan M. Turing   Bardeen, Shockley, Brattain   Z. Janssen   Gottlieb Daimler   Half-n-half Clue   6. Carburettor   Gottlieb Daimler   Bardeen, Shockley, Brattain   Karl Benz   Z. Janssen   Half-n-half Clue   7. Shorthand   Louis Pasteur   Kirkpatrick Macmillan   Karl Benz   Sir Isaac Pitman   Half-n-half Clue