Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159578 | Apparatus for rotating a transducer assembly of a borehole logging tool in a deviated borehole | Charles L. Dennis, Denis P. Schmitt | 1992-10-27 |
| 4969128 | Borehole acoustic logging system having synchronization | Charles L. Dennis | 1990-11-06 |