This application claims the benefit of U.S. Provisional Application No. 60/340,878 filed on Dec. 12, 2001.
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4898831 | Smith | Feb 1990 | A |
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4965209 | Smith | Oct 1990 | A |
5224658 | Smith | Jul 1993 | A |
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Entry |
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Fontana, John V. (1994) “Improvements in Soil, Interstitial Soil Gas, and Ground Water Sample Acquisition With Hydraulic Probe Driven Technologies for Near Surface Geochemical Exploration Surveys”, AAPG Hedberg Res. Conf., Vancouver, Brit. Columbia, Canada, 4 pages. |
Tissot, B. P. and Welte, D. H. (1984) “Petroleum Formation and Occurrence”, 2nd Ed., Springer-Verlag, Berlin, p. 420. |
Number | Date | Country | |
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60/340878 | Dec 2001 | US |