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Borehole mining method
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Patent number 6,688,702
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Issue date Feb 10, 2004
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Grigori A. Abramov
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E21 - EARTH DRILLING MINING
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Wellbore mineral jetting tool
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Patent number 5,253,718
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Issue date Oct 19, 1993
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Seacoast Services, Inc.
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O. Wayne Lawler
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E21 - EARTH DRILLING MINING
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Manipulative device
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Patent number 4,826,087
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Issue date May 2, 1989
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David Chinery
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3873156
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Patent number 3,873,156
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Issue date Mar 25, 1975
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E21 - EARTH DRILLING MINING
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3402967
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Patent number 3,402,967
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Issue date Sep 24, 1968
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E21 - EARTH DRILLING MINING
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3402965
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Patent number 3,402,965
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Issue date Sep 24, 1968
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E21 - EARTH DRILLING MINING
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3400980
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Patent number 3,400,980
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Issue date Sep 10, 1968
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E21 - EARTH DRILLING MINING
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3347595
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Patent number 3,347,595
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Issue date Oct 17, 1967
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E21 - EARTH DRILLING MINING
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3070361
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Patent number 3,070,361
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Issue date Dec 25, 1962
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E21 - EARTH DRILLING MINING
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2822158
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Patent number 2,822,158
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Issue date Feb 4, 1958
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E21 - EARTH DRILLING MINING
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2745647
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Patent number 2,745,647
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Issue date May 15, 1956
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E21 - EARTH DRILLING MINING
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2720390
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Patent number 2,720,390
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Issue date Oct 11, 1955
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E21 - EARTH DRILLING MINING
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2251916
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Patent number 2,251,916
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Issue date Aug 12, 1941
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E21 - EARTH DRILLING MINING
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2217360
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Patent number 2,217,360
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Issue date Oct 8, 1940
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B08 - CLEANING
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1607586
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Patent number 1,607,586
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Issue date Nov 16, 1926
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E21 - EARTH DRILLING MINING
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671429
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Patent number 671,429
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Issue date Apr 9, 1901
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E21 - EARTH DRILLING MINING