1. Power Loom   Nikola Tesla   Louis Pasteur   Evangelista Torricelli   Edmund Cartwright   Hint Half-n-half Clue   2. Jet Engine   Sir Frank Whittle   Karl Benz   Nikola Tesla   Evangelista Torricelli   Half-n-half Clue   3. Hovercraft   Robert Wilhelm Von Bunsen   H. W. Seeley   Louis Pasteur   Christopher Cockerell   Half-n-half Clue   4. Internal Combustion Engine   Otto   H. W. Seeley   Karl Benz   Andre-Marie Ampere   Half-n-half Clue   5. Printing Press   Leo H Baekeland   Johann Gutenberg   John J. Loud   James Harrison, Alexander Catlin   Half-n-half Clue   6. Ball-Point Pen   David Bushnell   C. F. Brush   Nikola Tesla   John J. Loud   Half-n-half Clue   7. Vaccination   Louis Pasteur   Edward Jenner   Kirkpatrick Macmillan   Robert Wilhelm Von Bunsen   Half-n-half Clue