Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331604 | Methods and apparatus for discrete-frequency tube-wave logging of boreholes | Chaur-Jian Hsu | 1994-07-19 |
| 5309404 | Receiver apparatus for use in logging while drilling | Sergio Kostek, Thomas J. Plona | 1994-05-03 |