Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844025 | Dual spark plug combustion chamber | — | 1989-07-04 |
| 4821694 | Hypereutectic aluminum-silicon casting alloy | William G. Hesterberg, Raymond J. Donahue | 1989-04-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844025 | Dual spark plug combustion chamber | — | 1989-07-04 |
| 4821694 | Hypereutectic aluminum-silicon casting alloy | William G. Hesterberg, Raymond J. Donahue | 1989-04-18 |