Number | Name | Date | Kind |
---|---|---|---|
1999291 | Gouldbourn et al. | Apr 1935 | |
2118157 | Camp | May 1938 | |
2555314 | Buckley et al. | Jun 1951 | |
2887228 | Harlan et al. | May 1959 | |
2941783 | Stinson | Jun 1960 | |
2999597 | Harms | Sep 1961 | |
3498461 | Miller | Mar 1970 | |
3672127 | Mayse et al. | Jun 1972 | |
3706384 | Weijman-Hane | Dec 1972 | |
4110218 | Maniott et al. | Aug 1978 | |
4247312 | Thakur et al. | Jan 1981 | |
4366058 | Wolde-Michael | Dec 1982 | |
4421645 | Creps et al. | Dec 1983 | |
4422931 | Wolde-Michael | Dec 1983 |
Entry |
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Thakur and Poundstone, "Horizontal Drilling Technology for Advanced Degasification", Mining Engineering, Jun. 1980. |
Shields, "Degasification Takes A Profitable Direction", Coal Mining and Processing, Jun. 1980. |
Two articles from an Aug. 1982, Issue of Chemical Engineering. |