Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5272680 | Method of decoding MWD signals using annular pressure signals | Donald S. Grosso, Stephen Wallace | 1993-12-21 |
| 4761889 | Method for the detection and correction of magnetic interference in the surveying of boreholes | Martin E. Cobern, Edmund M. Hamlin | 1988-08-09 |
| 4674773 | Insulating coupling for drill collars and method of manufacture thereof | Robert J. Maron | 1987-06-23 |
| 4589187 | Method of manufacturing an insulating coupling for drill collars | Robert J. Maron | 1986-05-20 |
| 4319240 | Electrical connector for borehole telemetry apparatus | Charles W. Helm, Ralph F. Spinnler | 1982-03-09 |
| 4266606 | Hydraulic circuit for borehole telemetry apparatus | — | 1981-05-12 |
| 4265305 | Mounting and shock absorber assembly for borehole telemetry apparatus | Normand P. Holcomb | 1981-05-05 |