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Casing inflation packer
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Patent number 5,400,855
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Issue date Mar 28, 1995
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Halliburton Company
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Lee W. Stepp
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E21 - EARTH DRILLING MINING
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Isolation packer extension
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Patent number 4,296,808
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Issue date Oct 27, 1981
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Halliburton Services
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Eugene E. Baker
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E21 - EARTH DRILLING MINING
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Isolation gravel packer
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Patent number 4,295,524
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Issue date Oct 20, 1981
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Halliburton Company
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Eugene E. Baker
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E21 - EARTH DRILLING MINING
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Port valve isolation packer
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Patent number 4,192,378
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Issue date Mar 11, 1980
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Halliburton Company
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Eugene E. Baker
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E21 - EARTH DRILLING MINING
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