Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887982 | Gear driven marine propulsion system with steerable gearcase and dual counterrotating propellers | Neil A. Newman | 1989-12-19 |
| 4887983 | Chain drive marine propulsion system with dual counterrotating propellers | Neil A. Newman | 1989-12-19 |
| 4872857 | Operation optimizing system for a marine drive unit | Neil A. Newman, John M. Griffiths, Lyle M. Forsgren, Wayne T. Beck | 1989-10-10 |