Alexander Graham Bell, George Washington Carver, Eli Whitney, Robert Fulton, Orville and Wilbur Wright and Henry Ford are among the most famous of American inventors. There are many others but these six have had a long-lasting impact on American industry and innovation.
Alexander Graham Bell's most famous invention is the telephone.
George Washington Carver worked primarily with peanuts and other agricultural products. Carver developed hundreds of products from peanuts, sweet potatoes, pecans and soybeans, including peanut butter, a rubber substitute, adhesives, foodstuffs, dyes, and pigments.
Eli Whitney invented the cotton gin. The machine automatically separated the seeds from cotton much faster than people could with their hands. This invention led the agriculture of the American South away from a labor intensive situation into a more industrialized environment.
Robert Fulton is most credited with his work with the steam engine. He did not invent the steam engine but his work modifying the engine led to innovations in steam technology. His work eventually led to the steamboat which greatly contributed to transportation and trade by allowing boats to move up and down large rivers.
Henry Ford is considered a titan of innovation for his work in developing the moving assembly line. He applied the concept of the assembly line to his car factory and greatly increased labor efficiency. Soon, the concept was adopted by other industries.
Wilbur and Orville Wright are famous for developing and patenting the first working airplane.