Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9416603 | Tubing injector with built in redundancy | Sinisa Dobrijevic, Robert L. Ewen | 2016-08-16 |
| 8381840 | Method of protecting a top drive drilling assembly and a top drive drilling assembly modified in accordance with this method | Sinisa Dobrijevic | 2013-02-26 |
| 7467659 | Tubing injector head | Sinisa Dobrijevic | 2008-12-23 |
| 6913096 | Top drive well drilling apparatus | Sinisa Dobrijevic | 2005-07-05 |