| American engineer and inventor most known for inventing air conditioning |
German-Jewish immigrant who founded the first blue jean manufacturer |
American inventor and scientist most known for the development of the phonograph and light bulb |
American inventor most known for the invention of the cotton gin |
an American engineer and inventor who developed the first steamboat and designed the first submarine |
| Polish woman physicist and chemist who discovered radium and polonium |
German goldsmith and printer and the inventor of the printing press |
African American physician who developed blood banks |
a mechanical engineer and inventor who is most famous for the development of the steam engine and for whom the system of measuring the rate of energy conversion was named |
a toy inventor that is most famous for the Etch-a-Sketch |