Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474307 | Piston ring employing elastomeric sealing member within the ring groove | Donald J. Altobe | 1995-12-12 |
| 5253877 | Piston ring having tapered outwardly extending wiper | Donald J. Altobelli | 1993-10-19 |
| 4984544 | Lubricating means for pin connected relatively rotatable engine part and method of lubrication | — | 1991-01-15 |