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Richard Vaclavik
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Houston, TX, US
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last 30 patents
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Patent Application
Contamination-resistant sand control apparatus and method for preve...
Publication number
20050072570
Publication date
Apr 7, 2005
Lyle Vaughan Lehman
E21 - EARTH DRILLING MINING
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Patent Application
Well treatment apparatus and method
Publication number
20040040707
Publication date
Mar 4, 2004
Ronald G. Dusterhoft
E21 - EARTH DRILLING MINING