Number | Name | Date | Kind |
---|---|---|---|
1999147 | Ambrose et al. | Apr 1935 | |
2146263 | Johnston | Feb 1939 | |
2510300 | Walls | Jun 1950 | |
2514585 | Natland | Jul 1950 | |
2531083 | Smith | Nov 1950 | |
2537605 | Sewell | Jan 1951 | |
2779195 | Simon | Jan 1957 | |
2880969 | Williams | Apr 1959 | |
3064742 | Bridwell | Nov 1962 | |
3086602 | Henderson | Apr 1963 | |
3112799 | Gallus | Dec 1963 | |
3123158 | Gallus | Mar 1964 | |
3207240 | Hugel | Sep 1965 | |
3302734 | Meadors | Feb 1967 | |
3467208 | Kelly | Sep 1969 | |
3521715 | Krutein | Jul 1970 | |
3841419 | Russell | Oct 1974 | |
4098361 | Lamothe | Jul 1978 | |
4256192 | Aumann | Mar 1981 | |
4272987 | Aumann et al. | Jun 1981 | |
4312414 | Park | Jan 1982 | |
4321968 | Clear | Mar 1982 | |
4449594 | Sparks | May 1984 | |
4479557 | Park et al. | Oct 1984 | |
4598777 | Park et al. | Jul 1986 | |
4716974 | Radford et al. | Jan 1988 | |
4848487 | Anderson et al. | Jul 1939 |
Number | Date | Country |
---|---|---|
0141069 | Apr 1980 | DDX |
0509815 | Apr 1976 | SUX |
0517828 | Jun 1976 | SUX |
1234577 | May 1986 | SUX |
1239260 | Jun 1986 | SUX |
1302168 | Apr 1987 | SUX |
8502403 | Nov 1981 | GBX |
8913820 | Jun 1989 | GBX |
Entry |
---|
"Crumbly Cores? Dip Them In Plastic And Freeze", article in The Oil and Gas Journal, 31 May 1965, p. 40. |