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Steve Corbett
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Aberdeen, GB
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Patents Grants
last 30 patents
Information
Patent Grant
Downhole apparatus and method
Patent number
10,132,138
Issue date
Nov 20, 2018
Weatherford Technology Holdings, LLC
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole apparatus and method
Patent number
10,077,633
Issue date
Sep 18, 2018
Petrowell Limited
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole apparatus and method
Patent number
10,053,958
Issue date
Aug 21, 2018
Weatherford Technology Holdings, LLC
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole apparatus and method
Patent number
10,018,015
Issue date
Jul 10, 2018
Weatherford Technology Holdings, LLC
Daniel George Purkis
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
DOWNHOLE APPARATUS AND METHOD
Publication number
20180306003
Publication date
Oct 25, 2018
Weatherford Technology Holdings, LLC.
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE APPARATUS AND METHOD
Publication number
20150167429
Publication date
Jun 18, 2015
Petrowell Limited
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE APPARATUS AND METHOD
Publication number
20150167430
Publication date
Jun 18, 2015
Petrowell Limited
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE APPARATUS AND METHOD
Publication number
20150167431
Publication date
Jun 18, 2015
Petrowell Limited
Daniel George Purkis
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE APPARATUS AND METHOD
Publication number
20150159469
Publication date
Jun 11, 2015
Petrowell Limited
Daniel George Purkis
E21 - EARTH DRILLING MINING