Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5284216 | Down-the-hole drill tool for drilling in advance of a casing tube | Jan-Gunnar Hedlund, Kjell Jansson, Bengt Asberg | 1994-02-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5284216 | Down-the-hole drill tool for drilling in advance of a casing tube | Jan-Gunnar Hedlund, Kjell Jansson, Bengt Asberg | 1994-02-08 |