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Memory operated well tools
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Patent number 4,740,897
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Issue date Apr 26, 1988
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Panex Corporation
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Leroy C. Delatorre
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E21 - EARTH DRILLING MINING
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Coulometric titrator
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Patent number 4,055,478
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Issue date Oct 25, 1977
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Petrolite Corporation
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Homer M. Wilson
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G01 - MEASURING TESTING
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Corrosion ratemeter
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Patent number 4,040,931
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Issue date Aug 9, 1977
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Petrolite Corporation
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Homer M. Wilson
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G01 - MEASURING TESTING
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Redundant intrinsic safety barrier
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Patent number 3,968,407
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Issue date Jul 6, 1976
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Petrolite Corporation
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Homer M. Wilson
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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