Number | Name | Date | Kind |
---|---|---|---|
RE29562 | Wray et al. | Mar 1978 | |
2740479 | Schwegman | Mar 1956 | |
3358755 | Chisholm | Dec 1967 | |
3431985 | Bowen | Mar 1969 | |
3646995 | Manes et al. | Mar 1972 | |
3664415 | Wray et al. | May 1972 | |
3782461 | Watkins | Jan 1974 | |
3850250 | Holden et al. | Nov 1974 | |
3856085 | Holden et al. | Dec 1974 | |
3858649 | Wray et al. | Jan 1975 | |
3860069 | Wray et al. | Jan 1975 | |
3915228 | Giebeler | Oct 1975 | |
3930540 | Holden et al. | Jan 1976 | |
3964305 | Wray et al. | Jun 1976 | |
3964544 | Farley et al. | Jun 1976 | |
3976136 | Farley et al. | Aug 1976 | |
4047564 | Nix et al. | Sep 1977 | |
4058165 | Holden et al. | Nov 1977 | |
4059153 | Nix et al. | Nov 1977 | |
4063593 | Jessup | Dec 1977 | |
4076077 | Nix et al. | Feb 1978 | |
4109724 | Barrington | Aug 1978 | |
4109725 | Williamson et al. | Aug 1978 | |
4113012 | Evans et al. | Sep 1978 | |
4144937 | Jackson et al. | Mar 1979 | |
4341266 | Craig | Jul 1982 |
Entry |
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"APR Ball Valve Tester", Halliburton Services Sales and Service Catalog-Number 39, pp. 3310-3311. |