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Petrolphysics Operators
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San Francisco, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Gravel packing system for a production radial tube
Patent number
5,035,285
Issue date
Jul 30, 1991
Petrolphysics Operators
Ben W. O. Dickinson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Gravel packing system for a production radial tube
Patent number
4,974,672
Issue date
Dec 4, 1990
Petrolphysics Operators
Ben W. O. Dickinson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Oil well production system using a hollow tube liner
Patent number
4,872,509
Issue date
Oct 10, 1989
Petrolphysics Operators
Ben W. O. Dickinson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Gravel packing system for a production radial tube
Patent number
4,865,128
Issue date
Sep 12, 1989
Petrolphysics Operators
Ben W. O. Dickinson
E21 - EARTH DRILLING MINING