| Inventor | Invention | Clue |
| Bartolomeo Cristofori | |
| Blaise Pascal | |
| Conrad Gesner | |
| Claude de Jouffroy | |
| Johann Wolfgang Döbereiner | |
| Stephen Perry | |
| Emile Berliner | |
| LaMarcus Adna Thompson | |
| | Inventor | Invention | Clue |
| Paul Cornu | |
| Caresse Crosby (Mary Phelps Jacob) | |
| Otto Frederick Rohwedder | |
| Albert Hofman | |
| Louis Réard | |
| Joseph Shivers | |
| Andy Hidebrand | |
|