1. Bifocal Lens   Benjamin Franklin   King C. Gillette   Sir Alexander Graham Bell   James Watt   Hint Half-n-half Clue   2. Elevator   Benjamin Franklin   Thomas Alva Edison   Orville and Wilbur Wright   Elisha G. Otis   Half-n-half Clue   3. Telegraph Code   Elisha G. Otis   Fahrenheit   Sir Alexander Graham Bell   Samuel Morse   Half-n-half Clue   4. Dynamite   Orville and Wilbur Wright   Fahrenheit   Michael Faraday   Alfred B. Nobel   Half-n-half Clue   5. Electric Generator   Orville and Wilbur Wright   Thomas Alva Edison   Fahrenheit   Michael Faraday   Half-n-half Clue   6. Movie Projector   Benjamin Franklin   Thomas Alva Edison   John Logie Baird   James Watt   Half-n-half Clue   7. Mercury Thermometer   Sir Alexander Graham Bell   Fahrenheit   John Boyd Dunlop   Thomas Alva Edison   Half-n-half Clue