Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875884 | Marine propulsion device with thru-transom engine oil drain system | — | 1989-10-24 |
| 4872531 | Marine stern drive with through-housings lubrication system | Francis E. Bertram, Jack L. Golz | 1989-10-10 |
| 4872860 | Sacrificial anode for marine propulsion units | — | 1989-10-10 |
| 4869121 | Marine propulsion unit with improved drive shaft arrangement | — | 1989-09-26 |