Issued Patents All Time
Showing 76–79 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817505 | Piston with stiffening structure for lower skirt regions | — | 1989-04-04 |
| 4809591 | Pistons with oil retaining depressions | David A. Parker | 1989-03-07 |
| 4760771 | Pistons with oil retaining cavities | Alberto Felici | 1988-08-02 |
| 4752995 | Manufacture of pistons | John G. Collyear, David A. Parker | 1988-06-28 |