1. Internal Combustion Engine   Robert Wilhelm Von Bunsen   Otto   John J. Loud   Otto von Guericke   Hint Half-n-half Clue   2. Fountain Pen   Lewis E. Waterman   Edward Jenner   Edmund Cartwright   C. F. Brush   Half-n-half Clue   3. Bakelite   Nikola Tesla   William Siemens   G. Ferdinand Von Zeppelin   Leo H Baekeland   Half-n-half Clue   4. Electric Flat Iron   Lewis E. Waterman   Leo H Baekeland   Christopher Cockerell   H. W. Seeley   Half-n-half Clue   5. Shorthand   Sir Isaac Pitman   Sir Frank Whittle   James Harrison, Alexander Catlin   Dr. William Stokes, Rene Laennec   Half-n-half Clue   6. Electronic Computer   Edmund Cartwright   Otto   Christopher Cockerell   Dr. Alan M. Turing   Half-n-half Clue   7. Refrigerator   Alessandro Volta   Bardeen, Shockley, Brattain   C. F. Brush   James Harrison, Alexander Catlin   Half-n-half Clue