Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886408 | Bowed external spring retaining ring of the E-shaped type | Edmund F. Killian | 1989-12-12 |
| 4798075 | Method and apparatus for making a bowed external spring retaining ring of the E-shaped type | Edmund F. Killian | 1989-01-17 |