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Kare-Jonny Haugvaldstad
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Stavanger, NO
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last 30 patents
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Patent Grant
Thru-tubing stackable perforating gun system and method for use
Patent number
6,658,981
Issue date
Dec 9, 2003
Baker Hughes Incorporated
James A. Rochen
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
Thru-tubing stackable perforating gun system and method for use
Publication number
20020100360
Publication date
Aug 1, 2002
James A. Rochen
E21 - EARTH DRILLING MINING