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Peter V. Smith
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Sugar Land, TX, US
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last 30 patents
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Patent Grant
Selective direct and reverse circulation check valve mechanism for...
Patent number
6,889,771
Issue date
May 10, 2005
Schlumberger Technology Corporation
Lawrence J. Leising
E21 - EARTH DRILLING MINING
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Patent Grant
Disconnect check valve mechanism for coiled tubing
Patent number
6,808,023
Issue date
Oct 26, 2004
Schlumberger Technology Corporation
Peter V. Smith
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
Disconnect check valve mechanism for coiled tubing
Publication number
20040079531
Publication date
Apr 29, 2004
Peter V. Smith
E21 - EARTH DRILLING MINING