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Darrin Lynn Yenzer
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Cypress, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Top drive with shaft seal isolation
Patent number
7,748,445
Issue date
Jul 6, 2010
National-Oilwell Varco, L.P.
Lawrence Edward Wells
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
Drilling and Production System Components with Wide Flange Bodies
Publication number
20190128085
Publication date
May 2, 2019
CAMERON TECHNOLOGIES LIMITED
Matthew D. Givens
E21 - EARTH DRILLING MINING
Information
Patent Application
Blowout Preventer with Choke and Kill Line Pass through Conduits
Publication number
20190093438
Publication date
Mar 28, 2019
Matthew D. Givens
E21 - EARTH DRILLING MINING
Information
Patent Application
BLOWOUT PREVENTER WITH WIDE FLANGE BODY
Publication number
20170314358
Publication date
Nov 2, 2017
Cameron International Corporation
Matthew D. Givens
E21 - EARTH DRILLING MINING
Information
Patent Application
Top drive with shaft seal isolation
Publication number
20080210437
Publication date
Sep 4, 2008
Lawrence Edward Wells
E21 - EARTH DRILLING MINING