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Production Data Inc.
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Long Beach, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Steam injection survey apparatus and method for testing wells
Patent number
4,928,522
Issue date
May 29, 1990
Production Data, Inc.
Gerald J. Tonnelli
E21 - EARTH DRILLING MINING
Information
Patent Grant
Oil well logging probe assembly
Patent number
4,096,752
Issue date
Jun 27, 1978
Production Data Inc.
Gerald J. Tonnelli
E21 - EARTH DRILLING MINING
Information
Patent Grant
Oil well logging device having plural well fluid parameter measurin...
Patent number
4,015,194
Issue date
Mar 29, 1977
Production Data Inc.
Karol E. Epling
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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