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Eric Mei
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Houston, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Deformation resistant opening chamber head and method
Patent number
9,109,421
Issue date
Aug 18, 2015
Hydril USA Distribution LLC
William L. Carbaugh
E21 - EARTH DRILLING MINING
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Patent Grant
Bidirectional ram BOP and method
Patent number
8,573,557
Issue date
Nov 5, 2013
Hydril USA Manufacturing LLC
William L. Carbaugh
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Deformation Resistant Opening Chamber Head and Method
Publication number
20100155628
Publication date
Jun 24, 2010
William L. Carbaugh
E21 - EARTH DRILLING MINING
Information
Patent Application
BIDIRECTIONAL RAM BOP AND METHOD
Publication number
20100155080
Publication date
Jun 24, 2010
William L. Carbaugh
E21 - EARTH DRILLING MINING