1. Who introduced the harpoon, greatly changing the whaling industry?

2. Which engineer, inventor, and educator was granted a patent for a flow distributor that was used on nuclear reactor cores?

3. Who refined a soy protein that became the basis of Aero-Foam, a foam fire extinguisher used by the U.S. Navy in World War II?

4. Who invented and perfected the modern design for a ship’s sail?

5. In the mid-19th century who developed a method of refining sugar which consisted of a series of vacuum pans combined in a step-by-step process to make heated evaporated sugar into crystallized granules?

6. Who designed and patented a shoe lasting machine, which mechanically stitched the shoe leather to the sole of the shoe?

7. Who invented the automatic railroad car coupler commonly known as the “Jenny coupler”?

8. Who improved the function of the fountain pen by designing a reservoir to hold the ink and a mechanism to deliver the ink to the tip?

9. Who was granted a patent for creating a portable shield to protect army gunners and the infantry supporting them?

10. In 1872 who patented a device that automatically oiled locomotive parts while the train was moving?

11. Who, along with her husband, invented the first form of a home security system?

12. In 1935 who invented the first automatic refrigeration for long-haul trucks and railroad cars?

13. Who patented new and useful improvements to the water closet (toilet)?

14. In 1881 who, along with Joseph V. Nichols, made improvements to Thomas Edison’s incandescent light bulb?

15. Which inventor, who was awarded some 35 patents for electrical inventions, was known as “the Black Edison?”

16. Who invented the gas mask?

17. Who was the inventor of a guitar called the Euphonica?

18. Who patented a design for automatically opening and closing elevator doors?

19. Who patented an improved rotary blade lawn mower?