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Downhole actuator device
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Patent number 10,174,573
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Issue date Jan 8, 2019
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TARGET Intervention AS
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Stig Bakke
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E21 - EARTH DRILLING MINING
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Hydraulic jar device
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Patent number 7,163,058
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Issue date Jan 16, 2007
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Bakke Technology, AS
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Stig Bakke
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E21 - EARTH DRILLING MINING
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Hydraulic cam motor
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Patent number 7,089,847
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Issue date Aug 15, 2006
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Weatherford/Lamb, Inc.
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Stig Bakke
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Releasable connector
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Patent number 6,450,541
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Issue date Sep 17, 2002
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Bakke Technology AS
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Stig Bakke
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E21 - EARTH DRILLING MINING
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Impact tool
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Patent number 6,164,393
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Issue date Dec 26, 2000
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Bakke Technology AS
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Stig Bakke
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E21 - EARTH DRILLING MINING
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Bidirectional hydraulic jar
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Patent number 5,803,182
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Issue date Sep 8, 1998
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Gefro Oilfield Services
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Stig Erling Bakke
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E21 - EARTH DRILLING MINING
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