John W. A. Millar

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Twickenham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic impedance test method
- Patent number 5,170,378
- Issue date Dec 8, 1992
- The British Petroleum Company p.l.c.
- David W. Mellor
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fracture investigation by resonance sweeping technique
- Patent number 5,093,811
- Issue date Mar 3, 1992
- The British Petroleum Company p.l.c.
- David W. Mellor
- E21 - EARTH DRILLING MINING