Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660503 | Light weight scuba with buoyancy control | — | 1997-08-26 |
| 5640148 | Dual activation alarm system | Robert E. Gray, Bruce A. Hefner, Paul D. Hiltman | 1997-06-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660503 | Light weight scuba with buoyancy control | — | 1997-08-26 |
| 5640148 | Dual activation alarm system | Robert E. Gray, Bruce A. Hefner, Paul D. Hiltman | 1997-06-17 |