Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128902 | Electromechanical transducer for acoustic telemetry system | — | 1992-07-07 |
| 4857175 | Centrifugal debris catcher | — | 1989-08-15 |
| 4319240 | Electrical connector for borehole telemetry apparatus | Frederick A. Stone, Charles W. Helm | 1982-03-09 |