Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5105890 | Apparatus for altering the length of a downhole tool assembly | Grant A. Duguid, Kenneth Davis | 1992-04-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5105890 | Apparatus for altering the length of a downhole tool assembly | Grant A. Duguid, Kenneth Davis | 1992-04-21 |