1. Electric Lamp   Elisha G. Otis   John Logie Baird   Thomas Alva Edison   Benjamin Franklin   Hint Half-n-half Clue   2. Waterproof Rubber   Orville and Wilbur Wright   Charles Macintosh   Michael Faraday   Thomas Alva Edison   Half-n-half Clue   3. Bifocal Lens   Thomas Alva Edison   Sir Alexander Graham Bell   King C. Gillette   Benjamin Franklin   Half-n-half Clue   4. Steam Engine (condenser)   Michael Faraday   Elisha G. Otis   Fahrenheit   James Watt   Half-n-half Clue   5. Aeroplane   John Logie Baird   Orville and Wilbur Wright   Fahrenheit   Alfred B. Nobel   Half-n-half Clue   6. Vulcanised Rubber   James Watt   Charles Goodyear   John Boyd Dunlop   Michael Faraday   Half-n-half Clue   7. Electric Generator   Rudolf Diesel   King C. Gillette   Sir Alexander Graham Bell   Michael Faraday   Half-n-half Clue