Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846508 | Tubular connector system | Lionel J. Milberger, B. Lee Danner | 1989-07-11 |
| 4813496 | Drill ahead tool | David J. Rohweller | 1989-03-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846508 | Tubular connector system | Lionel J. Milberger, B. Lee Danner | 1989-07-11 |
| 4813496 | Drill ahead tool | David J. Rohweller | 1989-03-21 |