Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888522 | Electrical method and apparatus for impelling the extruded ejection of high-velocity material jets | — | 1989-12-19 |
| 4852493 | Ferrite core coupled slapper detonator apparatus and method | Ralph E. Boberg, Ronald S. Lee | 1989-08-01 |