Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644186 | Acoustic Transducer for LWD tool | James R. Birchak, Eugene J. Linyaev, Carl A. Robbins | 1997-07-01 |
| 5606124 | Apparatus and method for determining the gravitational orientation of a well logging instrument | Mark R. Doyle, David M. Chace, John T. Evans, Paul Bergren | 1997-02-25 |