Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844140 | Releasable drive assembly | Mitchell J. Billows | 1989-07-04 |
| 4831509 | Door operation control apparatus | Richard Aubert | 1989-05-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844140 | Releasable drive assembly | Mitchell J. Billows | 1989-07-04 |
| 4831509 | Door operation control apparatus | Richard Aubert | 1989-05-16 |