Harvey E. Mallory

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Tulsa, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Device for reduction of oxygen content in drilling fluid
- Patent number 4,350,505
- Issue date Sep 21, 1982
- Loffland Brothers Company
- Harvey E. Mallory
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and means for reduction of oxygen content in drilling fluid
- Patent number 4,136,747
- Issue date Jan 30, 1979
- Loffland Brothers Company
- Harvey E. Mallory
- E21 - EARTH DRILLING MINING