Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304232 | Breath sample receiving mouthpiece | — | 1989-10-24 |
| 4843377 | Remote confinement system | Donald W. Collier | 1989-06-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304232 | Breath sample receiving mouthpiece | — | 1989-10-24 |
| 4843377 | Remote confinement system | Donald W. Collier | 1989-06-27 |