Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6450258 | Method and apparatus for improved communication in a wellbore utilizing acoustic signals | Robert Green | 2002-09-17 |
| 6438070 | Hydrophone for use in a downhole tool | James R. Birchak, Alvin B. Miller | 2002-08-20 |