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Steve LANGFORD
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Boulogne-Billancourt, FR
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Patents Grants
last 30 patents
Information
Patent Grant
Lifting plug
Patent number
12,276,161
Issue date
Apr 15, 2025
Vallourec Oil and Gas France
Steve Langford
E21 - EARTH DRILLING MINING
Information
Patent Grant
Lifting plug
Patent number
12,247,442
Issue date
Mar 11, 2025
Vallourec Oil and Gas France
Steve Langford
E21 - EARTH DRILLING MINING
Information
Patent Grant
Threaded connection partially in a self-locking engagement
Patent number
11,840,895
Issue date
Dec 12, 2023
Vallourec Oil and Gas France
Steve Langford
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
LIFTING PLUG
Publication number
20250122766
Publication date
Apr 17, 2025
VALLOUREC OIL AND GAS FRANCE
Steve LANGFORD
E21 - EARTH DRILLING MINING
Information
Patent Application
THREADED CONNECTION PARTIALLY IN A SELF-LOCKING ENGAGEMENT
Publication number
20200325734
Publication date
Oct 15, 2020
VALLOUREC OIL AND GAS FRANCE
Steve LANGFORD
E21 - EARTH DRILLING MINING