Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843901 | Electric shift apparatus with manual override | Keith V. Leigh-Monstevens, John G. Vanderpoorte, Brian D. Mabee | 1989-07-04 |
| 4841793 | Electric shift apparatus | Keith V. Leigh-Monstevens, Edward L. Tury, John G. Vanderpoorte | 1989-06-27 |