Number | Name | Date | Kind |
---|---|---|---|
3727693 | Tausch et al. | Apr 1973 | |
3771597 | McGowen, Jr. | Nov 1973 | |
4398601 | Schwendemann et al. | Aug 1983 | |
4545434 | Higgins | Oct 1985 | |
4583591 | Krause, Jr. et al. | Apr 1986 | |
4583592 | Gazda et al. | Apr 1986 | |
4745974 | Higgins | May 1988 |
Entry |
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Otis, "Subsurface Flow Control Completion Equipment", 1985. |