Number | Date | Country | Kind |
---|---|---|---|
3428931 | Aug 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2352833 | Hassler | Jul 1944 | |
2759143 | Arps | Aug 1956 | |
2958821 | Webb | Nov 1960 | |
4103281 | Storm et al. | Jul 1978 |
Entry |
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Ward et al., "Borehole Telemetry System is Key to Continuous Down-Hole Drilling Measurements", Sep. 1975, pp. 111-118. |