| Clue | Answer |
|---|---|
| Used To Operate Valves In Combustion Engines Next Clue: He Invented The Lightning Rod, Bifocals And A Stove | Camshaft Back to Group 44 |
| Clue | Answer |
|---|---|
| Used To Operate Valves In Combustion Engines Next Clue: He Invented The Lightning Rod, Bifocals And A Stove | Camshaft Back to Group 44 |