Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660412 | Hybrid inflator | Donald W. Renfroe, Roy G. Brown, David A. Bilbrey, Richard L. Frantom, Richard K. Robbins +2 more | 1997-08-26 |
| 5659295 | Sliding piston pressure sensing device | Donald W. Renfroe, James Rose, David A. Bilbrey | 1997-08-19 |