Number | Name | Date | Kind |
---|---|---|---|
3208548 | Levin et al. | Sep 1965 | |
3475722 | White | Oct 1969 | |
3593255 | White | Jul 1971 | |
3949352 | Vogel | Apr 1976 | |
4184546 | Nicolas et al. | Jan 1980 | |
4339810 | Nichols et al. | Jul 1982 | |
4365321 | vonBose | Dec 1982 | |
4399692 | Hulsing, II et al. | Aug 1983 | |
4450543 | Neeley | May 1984 | |
4450928 | Weber et al. | May 1984 | |
4594691 | Kimball et al. | Jun 1986 | |
4606014 | Winbow et al. | Aug 1986 | |
4632212 | Benzing | Dec 1986 | |
4649526 | Windbow et al. | Mar 1987 | |
4682308 | Chung | Jul 1987 | |
4693335 | Almon | Sep 1987 | |
4713968 | Yale | Dec 1987 | |
4794572 | Sondergeld et al. | Dec 1988 |
Number | Date | Country |
---|---|---|
0224350 | Jun 1987 | EPX |
2145521A | Mar 1985 | GBX |
2158581 | Nov 1987 | GBX |
Entry |
---|
Hardee, Downhole Periodic Seismic Sources, 1983, pp. 57-71. |