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Joe E. Coleman
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New Orleans, LA, US
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last 30 patents
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Patent Grant
Method and apparatus for annulus pressure responsive circulation an...
Patent number
4,044,829
Issue date
Aug 30, 1977
Halliburton Company
Robert L. Jessup
E21 - EARTH DRILLING MINING
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Patent Grant
Method and apparatus for annulus pressure responsive circulation an...
Patent number
3,970,147
Issue date
Jul 20, 1976
Halliburton Company
Robert L. Jessup
E21 - EARTH DRILLING MINING