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David Armstrong
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Rock Springs, WY, US
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Patents Grants
last 30 patents
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Patent Grant
Sealing plug and method for removing same from a well
Patent number
7,328,750
Issue date
Feb 12, 2008
Halliburton Energy Services, Inc.
Loren C. Swor
E21 - EARTH DRILLING MINING
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Patent Grant
Method for removing a tool from a well
Patent number
6,926,086
Issue date
Aug 9, 2005
Halliburton Energy Services, Inc.
Michael L. Patterson
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Sealing plug and method for removing same from a well
Publication number
20060021748
Publication date
Feb 2, 2006
Loren C. Swor
E21 - EARTH DRILLING MINING
Information
Patent Application
Method for removing a tool from a well
Publication number
20040221993
Publication date
Nov 11, 2004
Michael L. Patterson
E21 - EARTH DRILLING MINING