Number | Date | Country | Kind |
---|---|---|---|
82 12252 | Jul 1982 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2846662 | Sperks | Aug 1958 | |
3356146 | Anderson | Dec 1967 | |
3423671 | Vezin | Jan 1969 | |
3426865 | Henry | Feb 1969 | |
3566682 | Winkler, Jr. | Mar 1971 | |
4117394 | Souheite324374 | Sep 1978 |
Entry |
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Lang, "Technique expands Borehole Data," 7/9/79 Oil and Gas Journal, vol 77, #28, pp. 139-143. |