1. Bakelite   Karl Benz   Andre-Marie Ampere   Dr. Alan M. Turing   Leo H Baekeland   Hint Half-n-half Clue   2. Transistor   Gottlieb Daimler   William Siemens   Robert Wilhelm Von Bunsen   Bardeen, Shockley, Brattain   Half-n-half Clue   3. Printing Press   Kirkpatrick Macmillan   Dr. Wallace H. Carothers   Johann Gutenberg   Edmund Cartwright   Half-n-half Clue   4. Power Loom   Kirkpatrick Macmillan   Sir Isaac Pitman   Edmund Cartwright   Dr. Wallace H. Carothers   Half-n-half Clue   5. Jet Engine   Alessandro Volta   G. Ferdinand Von Zeppelin   Christopher Cockerell   Sir Frank Whittle   Half-n-half Clue   6. Internal Combustion Engine   Andre-Marie Ampere   Alessandro Volta   Otto   G. Ferdinand Von Zeppelin   Half-n-half Clue   7. Shorthand   Lewis E. Waterman   H. W. Seeley   Nikola Tesla   Sir Isaac Pitman   Half-n-half Clue