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Richard Verhoef
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Akkrum, NL
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last 30 patents
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Patent Grant
Tool and method for facilitating communication between a computer a...
Patent number
10,513,890
Issue date
Dec 24, 2019
National Oilwell Varco UK Limited
Richard Verhoef
E21 - EARTH DRILLING MINING
Information
Patent Grant
Torque reaction device for pipe running tool
Patent number
8,757,277
Issue date
Jun 24, 2014
National-Oilwell Varco, L.P.
Pieter Dekker
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for suspending a downhole well string
Patent number
8,752,619
Issue date
Jun 17, 2014
National-Oilwell Varco, L.P.
Rene Mulder
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
TOOL AND METHOD FOR FACILITATING COMMUNICATION BETWEEN A COMPUTER A...
Publication number
20180073306
Publication date
Mar 15, 2018
NATIONAL OILWELL VARCO UK LIMITED
Richard VERHOEF
E21 - EARTH DRILLING MINING
Information
Patent Application
TORQUE REACTION DEVICE FOR PIPE RUNNING TOOL
Publication number
20130075114
Publication date
Mar 28, 2013
National-Oilwell Varco, L.P.
Pieter Dekker
E21 - EARTH DRILLING MINING
Information
Patent Application
APPARATUS FOR SUSPENDING A DOWNHOLE WELL STRING
Publication number
20110259576
Publication date
Oct 27, 2011
National-Oilwell Varco, L.P.
Rene Mulder
E21 - EARTH DRILLING MINING