Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5040531 | Laser resistant ventilating device | Patrick W. Coleman, Craig J. Bell | 1991-08-20 |
| 4834087 | Laser resistant ventilating device | Patrick W. Coleman, Craig J. Bell | 1989-05-30 |