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Hafrsfjord, NO
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Patents Grants
last 30 patents
Information
Patent Grant
Method and device for setting and retrieving a crown plug
Patent number
10,082,005
Issue date
Sep 25, 2018
Interwell AS
Helge Salomonsen
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole apparatus and associated methods
Patent number
9,835,002
Issue date
Dec 5, 2017
Interwell AS
William Edmund Rolland Brown
E21 - EARTH DRILLING MINING
Information
Patent Grant
Flow activated circulating valve
Patent number
9,267,345
Issue date
Feb 23, 2016
Interwell AS
Eirik Grande
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
METHOD AND DEVICE FOR SETTING AND RETRIEVING A CROWN PLUG
Publication number
20180058181
Publication date
Mar 1, 2018
Interwell AS
Helge SALOMONSEN
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE APPARATUS AND ASSOCIATED METHODS
Publication number
20160069147
Publication date
Mar 10, 2016
Interwell AS
William Edmund Rolland BROWN
E21 - EARTH DRILLING MINING
Information
Patent Application
Flow Activated Circulating Valve
Publication number
20140345705
Publication date
Nov 27, 2014
Interwell AS
Eirik Grande
E21 - EARTH DRILLING MINING
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last 30 trademarks