Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872429 | Method of making low friction finger follower rocker arms | Nathaniel L. Field | 1989-10-10 |
| 4829647 | Method of making low friction finger follower rocker arms | Nathaniel L. Field | 1989-05-16 |