Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885993 | Shaped charge with bifurcated projection for detonating cord | Michael P. Hancock | 1989-12-12 |
| 4881445 | Shaped charge | — | 1989-11-21 |
| 4852495 | Shaped charge detonating cord retainer arrangement | Michael P. Hancock | 1989-08-01 |