1. Gottlieb Daimler   Carburettor   Ball-Point Pen   Bicycle   Microscope   Hint Half-n-half Clue   2. John Napier   Logarithmic Tables   Barometer   Refrigerator   Gunpowder   Half-n-half Clue   3. Robert Wilhelm Von Bunsen   Ball-Point Pen   Laboratory Gas Burner   Bicycle   Barometer   Half-n-half Clue   4. Louis Pasteur   Rabies Vaccine   Automobiles using gasoline   Barometer   Refrigerator   Half-n-half Clue   5. Leo H Baekeland   Jet Engine   Airship (rigid)   Power Loom   Bakelite   Half-n-half Clue   6. Otto   Rabies Vaccine   Shorthand   Stethoscope   Internal Combustion Engine   Half-n-half Clue   7. Z. Janssen   Carburettor   Power Loom   Microscope   Submarine   Half-n-half Clue