Number | Name | Date | Kind |
---|---|---|---|
2271005 | Grebe | Jan 1942 | |
2280851 | Ranney | Apr 1942 | |
2404341 | Zublin | Jul 1946 | |
2565794 | Young | Aug 1951 | |
2646254 | Johnston | Jul 1953 | |
3401749 | Daniel | Sep 1968 | |
3406766 | Henderson | Oct 1968 | |
3598190 | Pfau | Aug 1971 |
Entry |
---|
Gatlin Petroleum Engineering, Drilling and Well Completions (1960), Prentice Hall Inc., Englewood Cliffs, N.J., pp. 160, 161. |