Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869708 | Sprocket retention/chain guide assembly | Peter Hoffmann | 1989-09-26 |
| 4862770 | Two-speed alternator drive | — | 1989-09-05 |
| 4862845 | Variable camshaft timing system | Roger P. Butterfield | 1989-09-05 |