Stone; Frederick A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stone; Frederick A..The latest application filed is for "method for the detection and correction of magnetic interference in the surveying of boreholes".
- Stone; Frederick A. - Durham CT
| Patent | Date |
|---|---|
| Method for the detection and correction of magnetic interference in the surveying of boreholes Grant 4,761,889 - Cobern , et al. August 9, 1 | 1988-08-09 |
| Insulating coupling for drill collars and method of manufacture thereof Grant 4,674,773 - Stone , et al. June 23, 1 | 1987-06-23 |
| Method of manufacturing an insulating coupling for drill collars Grant 4,589,187 - Stone , et al. May 20, 1 | 1986-05-20 |
| Electrical connector for borehole telemetry apparatus Grant 4,319,240 - Stone , et al. March 9, 1 | 1982-03-09 |
| Hydraulic circuit for borehole telemetry apparatus Grant 4,266,606 - Stone May 12, 1 | 1981-05-12 |
| Mounting and shock absorber assembly for borehole telemetry apparatus Grant 4,265,305 - Stone , et al. May 5, 1 | 1981-05-05 |
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