1. Fountain Pen   Otto von Guericke   Sir Frank Whittle   Lewis E. Waterman   Louis Pasteur   Hint Half-n-half Clue   2. Electric Furnace   David Bushnell   Z. Janssen   William Siemens   Andre-Marie Ampere   Half-n-half Clue   3. Bicycle   Kirkpatrick Macmillan   Andre-Marie Ampere   Roger Bacon   Sir Isaac Pitman   Half-n-half Clue   4. Shorthand   Edward Jenner   Kirkpatrick Macmillan   John J. Loud   Sir Isaac Pitman   Half-n-half Clue   5. Bakelite   John J. Loud   Leo H Baekeland   David Bushnell   Dr. Alan M. Turing   Half-n-half Clue   6. Printing Press   Johann Gutenberg   Otto von Guericke   Louis Pasteur   Dr. Wallace H. Carothers   Half-n-half Clue   7. Carburettor   William Siemens   Gottlieb Daimler   Leo H Baekeland   James Harrison, Alexander Catlin   Half-n-half Clue