Number | Name | Date | Kind |
---|---|---|---|
654875 | Cook | Jul 1900 | |
3786865 | Tausch et al. | Jan 1974 | |
3786866 | Tausch et al. | Jan 1974 | |
3882935 | Calhoun | May 1975 | |
3948318 | Page, Jr. | Apr 1976 | |
4344602 | Arendt | Aug 1982 | |
4437522 | Krause, Jr. et al. | Mar 1984 | |
4457368 | Knierimen et al. | Jul 1984 | |
4569404 | Milberger et al. | Feb 1986 | |
4574889 | Pringle | Mar 1986 | |
4577694 | Brakhage, Jr. | Mar 1986 | |
4624315 | Dickson et al. | Nov 1986 | |
4967845 | Shirk | Nov 1990 | |
5167284 | Leismer | Dec 1992 | |
5249630 | Meaders et al. | Oct 1993 | |
5348087 | Williamson et al. | Sep 1994 | |
5492173 | Kilgore et al. | Feb 1996 | |
5826657 | Ringgenberg | Oct 1998 |
Entry |
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Publication: Baker Subsurface Safety Systems Catalog, Front cover and p. 13, dated 1995. |
Halliburton Wellstar.TM.TRSV Lock Open Tool, drawing CN03930, undated. |
Halliburton 2.813 Lock-out Tool F/3-1/2 Wellstar TRSV, drawing 42 Lox 38101, dated Jan. 30, 1996. |