Steven H. Gray

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Duncan, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for mixing a plurality of substances
- Patent number 4,538,221
- Issue date Aug 27, 1985
- Halliburton Company
- Stephen F. Crain
- G05 - CONTROLLING REGULATING
Information Patent Grant
Apparatus and method for mixing a plurality of substances
- Patent number 4,538,222
- Issue date Aug 27, 1985
- Halliburton Company
- Stephen F. Crain
- G05 - CONTROLLING REGULATING