Number | Name | Date | Kind |
---|---|---|---|
4324293 | Hushbeck | Apr 1982 | |
4420044 | Pullin et al. | Dec 1983 | |
4691779 | McMahan et al. | Sep 1987 | |
4896722 | Upchurch | Jan 1990 | |
5050681 | Skinner | Sep 1991 | |
5180015 | Ringgenberg et al. | Jan 1993 | |
5209303 | Barrington | May 1993 | |
5482119 | Manke et al. | Jan 1996 | |
5984014 | Poullard et al. | Nov 1999 |
Entry |
---|
Systems Engineering Bulletin, dated Oct. 9, 1990. |
LPR-N Description, undated. |
Select Tester Valve brochure, dated Jul. 21, 1998. |