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Dean RAMBO
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Kingwood, TX, US
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last 30 patents
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Patent Grant
Back pressure control system
Patent number
10,000,981
Issue date
Jun 19, 2018
CANRIG DRILLING TECHNOLOGIES LTD.
Darcy Nott
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
BACK PRESSURE CONTROL SYSTEM
Publication number
20150267490
Publication date
Sep 24, 2015
Canrig Drilling Technology Ltd.
Darcy NOTT
E21 - EARTH DRILLING MINING