Number | Name | Date | Kind |
---|---|---|---|
RE31313 | Fredd et al. | Jul 1983 | |
3664427 | Deaton | May 1972 | |
4051897 | Kingelin | Oct 1977 | |
4134452 | Kingelin | Jan 1979 | |
4149593 | Gazda et al. | Apr 1979 | |
4159643 | Watkins | Jul 1979 | |
4274485 | Fredd | Jun 1981 | |
4278130 | Evans et al. | Jul 1981 | |
4286661 | Gazda | Sep 1981 | |
4373583 | Waters | Feb 1983 | |
4420044 | Pullin et al. | Dec 1983 | |
4453599 | Fredd | Jun 1984 | |
4473122 | Tamplen | Sep 1984 | |
4487261 | Gazda | Dec 1984 | |
4583592 | Gazda et al. | Apr 1986 | |
4625799 | McCormick et al. | Dec 1986 | |
4633952 | Ringgenberg | Jan 1987 | |
4669537 | Rambaugh | Jun 1987 | |
4678035 | Goldschild | Jul 1987 |
Entry |
---|
"Whats Happening in Drilling", World Oil, Oct. 1983; Muhleman, Jr. |